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| 作者 | 正文 |
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发表时间：2009-04-14
hateeyes 写道
ls的ls，lz是java 不是python。 早八年可没有这个 |
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发表时间：2009-04-15
struts 写道 fc6029585 写道 请教一下..
gae有关数据库的建立(数据库建立,表的创建)?是怎么弄啊?? 有没有相关的地址啊? 我google了很久也没找到方法!! 你写好实现类加上注释。他会自动根据annotation生成数据库表的 http://code.google.com/intl/zh-CN/appengine/docs/java/gettingstarted/ 我看了下JPA的注解..但是都没有看到那个注解和自动建库,建表有关系.>!!! |
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发表时间：2009-04-15
我试着写了个JPA注解类,,
本地 run as gae application 的时候报错.. 大家帮忙指点下 Missing required argument 'module[s]' Google Web Toolkit 1.6.4 HostedMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logLevel level] [-gen dir] [-style style] [-ea] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] [-localWorkers count] module[s] where -noserver Prevents the embedded web server from running -port Specifies the TCP port for the embedded web server (defaults to 8888) -whitelist Allows the user to browse URLs that match the specified regexes (comma or space separated) -blacklist Prevents the user browsing URLs that match the specified regexes (comma or space separated) -logLevel The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL -gen The directory into which generated files will be written for review -style Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF) -ea Debugging: causes the compiled output to check assert statements. -server Specifies a different embedded web server to run (must implement ServletContainerLauncher) -startupUrl Automatically launches the specified URL -war The war directory to write output files into (defaults to war) -extra The directory into which extra, non-deployed files will be written -workDir The compiler work directory (must be writeable; defaults to a system temp dir) -localWorkers Specifies the number of local workers to use when compiling permutations and module[s] Specifies the name(s) of the module(s) to host |
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发表时间：2009-04-15
fc6029585 写道 我试着写了个JPA注解类,,
本地 run as gae application 的时候报错.. 大家帮忙指点下 Missing required argument 'module[s]' Google Web Toolkit 1.6.4 HostedMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logLevel level] [-gen dir] [-style style] [-ea] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] [-localWorkers count] module[s] where -noserver Prevents the embedded web server from running -port Specifies the TCP port for the embedded web server (defaults to 8888) -whitelist Allows the user to browse URLs that match the specified regexes (comma or space separated) -blacklist Prevents the user browsing URLs that match the specified regexes (comma or space separated) -logLevel The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL -gen The directory into which generated files will be written for review -style Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF) -ea Debugging: causes the compiled output to check assert statements. -server Specifies a different embedded web server to run (must implement ServletContainerLauncher) -startupUrl Automatically launches the specified URL -war The war directory to write output files into (defaults to war) -extra The directory into which extra, non-deployed files will be written -workDir The compiler work directory (must be writeable; defaults to a system temp dir) -localWorkers Specifies the number of local workers to use when compiling permutations and module[s] Specifies the name(s) of the module(s) to host 他会在项目的web-inf下生成appengine-generated目录。里面存的数据信息。 使用jpa需要把meta-inf下的xml文件换成persistence.xml |
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发表时间：2009-04-15
struts 写道 fc6029585 写道 我试着写了个JPA注解类,,
本地 run as gae application 的时候报错.. 大家帮忙指点下 Missing required argument 'module[s]' Google Web Toolkit 1.6.4 HostedMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logLevel level] [-gen dir] [-style style] [-ea] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] [-localWorkers count] module[s] where -noserver Prevents the embedded web server from running -port Specifies the TCP port for the embedded web server (defaults to 8888) -whitelist Allows the user to browse URLs that match the specified regexes (comma or space separated) -blacklist Prevents the user browsing URLs that match the specified regexes (comma or space separated) -logLevel The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL -gen The directory into which generated files will be written for review -style Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF) -ea Debugging: causes the compiled output to check assert statements. -server Specifies a different embedded web server to run (must implement ServletContainerLauncher) -startupUrl Automatically launches the specified URL -war The war directory to write output files into (defaults to war) -extra The directory into which extra, non-deployed files will be written -workDir The compiler work directory (must be writeable; defaults to a system temp dir) -localWorkers Specifies the number of local workers to use when compiling permutations and module[s] Specifies the name(s) of the module(s) to host 他会在项目的web-inf下生成appengine-generated目录。里面存的数据信息。 使用jpa需要把meta-inf下的xml文件换成persistence.xml 谢谢帮助...我还是自己先慢慢测试一下算了! |
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发表时间：2009-04-16
楼主..麻烦你帮我看一下.我找了一天了也不知道哪出了问题..
如果我将自带的jdoexample copy到eclipse中就可以直接运行了..
@Entity
public class UserInfo {
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private Long id;
private String userName;
private String password;
@Transient
private String phone;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
保存这个类..eclipse 控制台打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 1 classes. Timings : input=125 ms, enhance=47 ms, total=172 ms. Consult the log for full details 请问是不是意思就是 在gae的本地数据库dataNuclus就已经创建了这个类对应的表? 然后我写了个插入数据库的类
public class InsertDB {
public static void main(String[] args) {
EntityManager em=EMF.getEntiryManager();
for(int i=4;i<9;i++){
UserInfo user1=new UserInfo();
user1.setUserName("user"+i+i);
user1.setPassword(i+i+i+i+i+i+i+i+"");
user1.setPhone(i+i+"");
em.merge(user1);
}
}
}
保存的时候打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 0 classes. Timings : input=32 ms, enhance=0 ms, total=32 ms. Consult the log for full details DataNucleus Enhancer completed and no classes were enhanced. Consult the log for full details 我将 persistence.xml(google jpa 说明的xml直接copy过来的) copy 到了 META-INFO 下(和jdoconfig.xml 同一个目录) 写了个main方法 和servlet 运行 EntityManager em=EMF.getEntiryManager() ; Query query=em.createQuery("select u from UserInfo u"); List list=(List)query.getResultList(); System.out.println(list.size()+" size"); for(int i=0;i<list.size();i++){ UserInfo user=(UserInfo)list.get(i); System.out.println(user.getUserName()+" </br>"); } 但是都要报错 HTTP ERROR: 500 UserInfo RequestURI=/eat Caused by: javax.persistence.PersistenceException: UserInfo at org.datanucleus.jpa.NucleusJPAHelper.getJPAExceptionForNucleusException(NucleusJPAHelper.java:276) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:169) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Caused by: org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) ... 24 more Caused by: UserInfo org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Powered by Jetty:// 我的测试jpa项目附件发上来了 如果楼主有空请帮我看看..或者是把您的 简易博客 发给我参考下..哈哈 |
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|
发表时间：2009-04-16
fc6029585 写道 楼主..麻烦你帮我看一下.我找了一天了也不知道哪出了问题..
如果我将自带的jdoexample copy到eclipse中就可以直接运行了..
@Entity
public class UserInfo {
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private Long id;
private String userName;
private String password;
@Transient
private String phone;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
保存这个类..eclipse 控制台打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 1 classes. Timings : input=125 ms, enhance=47 ms, total=172 ms. Consult the log for full details 请问是不是意思就是 在gae的本地数据库dataNuclus就已经创建了这个类对应的表? 然后我写了个插入数据库的类
public class InsertDB {
public static void main(String[] args) {
EntityManager em=EMF.getEntiryManager();
for(int i=4;i<9;i++){
UserInfo user1=new UserInfo();
user1.setUserName("user"+i+i);
user1.setPassword(i+i+i+i+i+i+i+i+"");
user1.setPhone(i+i+"");
em.merge(user1);
}
}
}
保存的时候打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 0 classes. Timings : input=32 ms, enhance=0 ms, total=32 ms. Consult the log for full details DataNucleus Enhancer completed and no classes were enhanced. Consult the log for full details 我将 persistence.xml(google jpa 说明的xml直接copy过来的) copy 到了 META-INFO 下(和jdoconfig.xml 同一个目录) 写了个main方法 和servlet 运行 EntityManager em=EMF.getEntiryManager() ; Query query=em.createQuery("select u from UserInfo u"); List list=(List)query.getResultList(); System.out.println(list.size()+" size"); for(int i=0;i<list.size();i++){ UserInfo user=(UserInfo)list.get(i); System.out.println(user.getUserName()+" </br>"); } 但是都要报错 HTTP ERROR: 500 UserInfo RequestURI=/eat Caused by: javax.persistence.PersistenceException: UserInfo at org.datanucleus.jpa.NucleusJPAHelper.getJPAExceptionForNucleusException(NucleusJPAHelper.java:276) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:169) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Caused by: org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) ... 24 more Caused by: UserInfo org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Powered by Jetty:// 我的测试jpa项目附件发上来了 如果楼主有空请帮我看看..或者是把您的 简易博客 发给我参考下..哈哈 1,首先修改UserInfo主键的注释为 @Id @GeneratedValue(strategy = GenerationType.IDENTITY) 2，删除web-inf下appengine-generated 3，查询语句写错了。应该是select from fank.table.create.UserInfo u 我现在在公司。没有那个博客的代码。如果需要的话。晚上传给你qq:256484 |
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|
发表时间：2009-04-16
谢谢!!!struts!!
|
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|
发表时间：2009-05-31
fc6029585 写道 楼主..麻烦你帮我看一下.我找了一天了也不知道哪出了问题..
如果我将自带的jdoexample copy到eclipse中就可以直接运行了..
@Entity
public class UserInfo {
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private Long id;
private String userName;
private String password;
@Transient
private String phone;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
保存这个类..eclipse 控制台打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 1 classes. Timings : input=125 ms, enhance=47 ms, total=172 ms. Consult the log for full details 请问是不是意思就是 在gae的本地数据库dataNuclus就已经创建了这个类对应的表? 然后我写了个插入数据库的类
public class InsertDB {
public static void main(String[] args) {
EntityManager em=EMF.getEntiryManager();
for(int i=4;i<9;i++){
UserInfo user1=new UserInfo();
user1.setUserName("user"+i+i);
user1.setPassword(i+i+i+i+i+i+i+i+"");
user1.setPhone(i+i+"");
em.merge(user1);
}
}
}
保存的时候打印 DataNucleus Enhancer (version 1.1.0) : Enhancement of classes DataNucleus Enhancer completed with success for 0 classes. Timings : input=32 ms, enhance=0 ms, total=32 ms. Consult the log for full details DataNucleus Enhancer completed and no classes were enhanced. Consult the log for full details 我将 persistence.xml(google jpa 说明的xml直接copy过来的) copy 到了 META-INFO 下(和jdoconfig.xml 同一个目录) 写了个main方法 和servlet 运行 EntityManager em=EMF.getEntiryManager() ; Query query=em.createQuery("select u from UserInfo u"); List list=(List)query.getResultList(); System.out.println(list.size()+" size"); for(int i=0;i<list.size();i++){ UserInfo user=(UserInfo)list.get(i); System.out.println(user.getUserName()+" </br>"); } 但是都要报错 HTTP ERROR: 500 UserInfo RequestURI=/eat Caused by: javax.persistence.PersistenceException: UserInfo at org.datanucleus.jpa.NucleusJPAHelper.getJPAExceptionForNucleusException(NucleusJPAHelper.java:276) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:169) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Caused by: org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) ... 24 more Caused by: UserInfo org.datanucleus.exceptions.ClassNotResolvedException: UserInfo at org.datanucleus.util.Imports.resolveClassDeclaration(Imports.java:194) at org.datanucleus.query.compiler.JavaQueryCompiler.compileFrom(JavaQueryCompiler.java:209) at org.datanucleus.query.compiler.JPQLCompiler.compile(JPQLCompiler.java:72) at org.datanucleus.store.query.AbstractJPQLQuery.compileInternal(AbstractJPQLQuery.java:242) at org.datanucleus.store.query.Query.executeQuery(Query.java:1430) at org.datanucleus.store.query.Query.executeWithMap(Query.java:1367) at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:153) at fank.eatServlet.doGet(eatServlet.java:20) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:54) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:306) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) Powered by Jetty:// 我的测试jpa项目附件发上来了 如果楼主有空请帮我看看..或者是把您的 简易博客 发给我参考下..哈哈 USERINFO那个前面要加包名 被搞死了，原来hib的项目到这很多都不能用 |
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