Struts2 入门实例代码

Struts2 入门实例代码

关键字: Struts   Struts2    

Struts.xml 文件

 

代码

<!---->xml version="1.0" encoding="UTF-8" ?>
<!---->
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.enable.DynamicMethodInvocation" value="true" />
    <constant name="struts.devMode" value="true" />
    <include file="helloworld.xml"/>
struts>

<script>render_code();</script>

 

HelloWorld.xml

 

代码

<!---->xml version="1.0" encoding="UTF-8" ?>
<!---->
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <include file="struts-default.xml"/>
    <package name="helloworld" namespace="/" extends="struts-default">
        <interceptors>
            <interceptor name ="authentication" class ="com.jamesby.struts2.LogonInterceptor"/>
            <interceptor-stack name="helloWorldStack">
                <interceptor-ref name="authentication"/>
                <interceptor-ref name="paramsPrepareParamsStack"/>
            interceptor-stack>
        interceptors>
        <default-interceptor-ref name="helloWorldStack"/>
        <global-results>
            <result name="login">/WEB-INF/jsp/Logon.jspresult>
                  global-results>
        <action name="Logon_*" method="{1}" class="com.jamesby.struts2.Logon">
            <interceptor-ref name="paramsPrepareParamsStack"/>
            <result type="redirect-action">Mainresult>
            <result name="input">/WEB-INF/jsp/Logon.jspresult>
        action>
        <action name="crud" method="{1}" class="com.jamesby.struts2.UserAction">
            <result name="list">/WEB-INF/jsp/userList.jspresult>              <result name="success" type="redirect-action">crud!listresult>
            <result name="input">/WEB-INF/jsp/userForm.jspresult>
        action>
        <action name="*" class="com.jamesby.struts2.ExampleSupport">
            <result>/WEB-INF/jsp/{1}.jspresult>
        action>
    package>
struts>

<script>render_code();</script>

 

LogonInterceptor.java

 

代码

package com.jamesby.struts2;
import java.util.Map;
import com.jamesby.struts2.persist.User;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
public class LogonInterceptor extends AbstractInterceptor{
    @Override
    public String intercept(ActionInvocation ai) throws Exception {
        Map session = ai.getInvocationContext().getSession();
        User user = (User) session.get("user");
        if (null != user) {
            return ai.invoke();
        } else {
            return Action.LOGIN;
        }
    }
}

<script>render_code();</script>

 

Logon.java

 

代码

package com.jamesby.struts2;
import java.util.Map;
import org.apache.struts2.interceptor.SessionAware;
import org.apache.struts2.interceptor.validation.SkipValidation;
import com.jamesby.struts2.persist.DataBaseMock;
import com.jamesby.struts2.persist.User;
import com.opensymphony.xwork2.ActionSupport;
public class Logon extends ActionSupport implements SessionAware {
    private Map session;
    public void setSession(Map session) {
        this.session = session;
    }
    @SkipValidation
    public String doInput() throws Exception {
        return INPUT;
    }
    public String doLogon() throws Exception {
        User user = DataBaseMock.selectUserByUsernameAndPassword(getUsername(),
                getPassword());
        if (null == user)
            return INPUT;
        session.put("user", user);
        return SUCCESS;
    }
    private String username;
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    private String password;
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
}

<script>render_code();</script>

 

UserAction.java

 

代码

package com.jamesby.struts2;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.struts2.interceptor.validation.SkipValidation;
import com.jamesby.struts2.persist.DataBaseMock;
import com.jamesby.struts2.persist.User;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction  extends ActionSupport {
    private User user=new User();
    private List<user></user> userList;
    public List<hashmap></hashmap> getSexArray() {
        List<hashmap></hashmap> sexArray = new ArrayList<hashmap></hashmap>();
        HashMap male = new HashMap();
        male.put("key",new Integer(1));
        male.put("value","男");
        HashMap female = new HashMap();
        female.put("key",new Integer(2));
        female.put("value","女");
        sexArray.add(male);
        sexArray.add(female);
        return sexArray;
    }
    public List<hashmap></hashmap> getFromArray() {
        List<hashmap></hashmap> fromArray = new ArrayList<hashmap></hashmap>();
        HashMap bj = new HashMap();
        bj.put("id",new Integer(1));
        bj.put("name","北京");
        HashMap sh = new HashMap();
        sh.put("id",new Integer(2));
        sh.put("name","上海");
        HashMap tj = new HashMap();
        tj.put("id",new Integer(3));
        tj.put("name","天津");
        fromArray.add(bj);
        fromArray.add(sh);
        fromArray.add(tj);
        return fromArray;
    }
    @SkipValidation
    public String doList() throws Exception {
        userList = DataBaseMock.selectAllUser();
        return "list";
    }
    @SkipValidation
    public String doInput() {
        return INPUT;
    }
    public String doSave() {
        if (null == user.getUserid()) {
            user.setUserid(new Integer(DataBaseMock.getNewUserId()));
            DataBaseMock.saveUser(user);
        }else
        {
            DataBaseMock.updateUser(user);
        }
        return SUCCESS;
    }
    @SkipValidation
    public String doRead()
    {
        user = DataBaseMock.getUser(user.getUserid());
        return INPUT;
    }
    @SkipValidation
    public String doDelete() {
        DataBaseMock.deleteUser(user);
        return SUCCESS;
    }
    public List<user></user> getUserList() {
        return userList;
    }
    public void setUserList(List<user></user> userList) {
        this.userList = userList;
    }
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
}

<script>render_code();</script>

 

ExampleSupport.java

 

代码

package com.jamesby.struts2;
import com.opensymphony.xwork2.ActionSupport;
public class ExampleSupport extends ActionSupport {
}

<script>render_code();</script>

 

User.java

 

代码

package com.jamesby.struts2.persist;
public class User {
    private Integer userid;
    private String username;
    private String password;
    private int sex;
    private int age;
    private int from;
    public int getFrom() {
        return from;
    }
    public void setFrom(int from) {
        this.from = from;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public int getSex() {
        return sex;
    }
    public void setSex(int sex) {
        this.sex = sex;
    }
    public Integer getUserid() {
        return userid;
    }
    public void setUserid(Integer userid) {
        this.userid = userid;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
}

<script>render_code();</script>

 

DataBaseMock.java

 

代码

package com.jamesby.struts2.persist;
import java.util.ArrayList;
import java.util.List;
public class DataBaseMock {
    private static List<user></user> _cache = new ArrayList<user></user>();
    private static int userid = 0;
    static {
        User user = new User();
        user.setUserid(new Integer(0));
        user.setUsername("admin");
        user.setPassword("12345688");
        user.setFrom(1);// 北京
        user.setSex(1);// 男
        user.setAge(18);
        _cache.add(user);
    }
    public static User selectUserByUsernameAndPassword(String username,String password)
    {
        for (User u : _cache) {
            if (u.getUsername().equals(username)&&u.getPassword().equals(password)) {
                return u;
            }
        }
        return null;
    }
    public static List<user></user> selectAllUser()
    {
        return _cache;
    }
    public static int getNewUserId() {
        return ++userid;
    }
    public static void saveUser(User user) {
        _cache.add(user);
    }
    public static void updateUser(User user) {
        deleteUser(user);
        saveUser(user);
    }
    public static void deleteUser(User user) {
        for (User u : _cache) {
            if (u.getUserid().intValue() == user.getUserid().intValue()) {
                _cache.remove(u);
                break;
            }
        }
    }
    public static User getUser(Integer userid) {
        return _cache.get(userid);
    }
}

<script>render_code();</script>

 

Logon-validation.xml

 

代码

<!---->
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
    <field name="username">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        field-validator>
    field>
    <field name="password">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        field-validator>
    field>
validators>

<script>render_code();</script>

 

UserAction-validation.xml

 

代码

<!---->
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
  <field name="user.username">
     <field-validator type="requiredstring">
        <message key="errors.required.username"/>
      field-validator>
  field