struts2配置result

1. struts2配置result

新建项目HeadFirstStruts2Chap02_07

   
1) type默认是dispatcher内部转发

2) type为redirect重定向

3) type为chain链条

4) type为redirectAction重定向到action

5) result全局配置

HelloAction.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloAction extends ActionSupport {
    private String name;
    private String error;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getError() {
        return error;
    }
    public void setError(String error) {
        this.error = error;
    }
    @Override
    public String execute() throws Exception {
        if (name == null || "".equals(name)) {
            this.error = "name是空";
            return ERROR;
        }
        return SUCCESS;
    }
    public String redirectMethod() throws Exception{
        return "redirectMethodResult";
    }
    public String chainMethod() throws Exception{
        return "chainMethodResult";
    }
    public String redirectActionMethod() throws Exception{
        return "redirectActionMethodResult";
    }
}

HelloAction2.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloAction2 extends ActionSupport {
    private String name2;
    public String getName2() {
        return name2;
    }
    public void setName2(String name2) {
        this.name2 = name2;
    }
    @Override
    public String execute() throws Exception {
        this.name2 = "你好啊";
        return SUCCESS;
    }
}

struts.xml

<struts>
    <constant name="struts.enable.DynamicMethodInvocation" value="true" />
    <package name="manage" namespace="/" extends="struts-default">
        <global-results>
            <result name="error">error.jsp</result>
        </global-results>
        <action name="hello" class="com.andrew.action.HelloAction">
            <result name="success" type="dispatcher">success.jsp</result>
            <result name="redirectMethodResult" type="redirect">success.jsp</result>
            <result name="chainMethodResult" type="chain">hello2</result>
            <result name="redirectActionMethodResult" type="redirectAction">hello2</result>
        </action>
        <action name="hello2" class="com.andrew.action.HelloAction2">
            <result name="success" type="dispatcher">success.jsp</result>
        </action>
    </package>
</struts>

index.jsp

<a href="hello?name=Struts2" target="_blank">默认转发_dispatcher</a><br/>
<a href="hello!redirectMethod?name=Struts2" target="_blank">重定向_redirect</a><br/>
<a href="hello!chainMethod?name=Struts2" target="_blank">链条_chain</a><br/>
<a href="hello!redirectActionMethod?name=Struts2" target="_blank">重定向到Action_redirectAction</a><br/>
<a href="hello" target="_blank">全局result配置</a><br/>

success.jsp

Name:${name }<br/>
Name2:${name2 }

error.jsp

错误信息：${error }

运行结果：
http://localhost:8080/HeadFirstStruts2Chap02_07/index.jsp
默认转发_dispatcher
http://localhost:8080/HeadFirstStruts2Chap02_07/hello?name=Struts2
Name:Struts2
Name2:

重定向_redirect
http://localhost:8080/HeadFirstStruts2Chap02_07/success.jsp
Name:
Name2:

链条_chain
http://localhost:8080/HeadFirstStruts2Chap02_07/hello!chainMethod?name=Struts2
Name:Struts2
Name2:你好啊

重定向到Action_redirectAction
http://localhost:8080/HeadFirstStruts2Chap02_07/hello2.action
Name:
Name2:你好啊

全局result配置
http://localhost:8080/HeadFirstStruts2Chap02_07/hello
错误信息：name是空

6) freemarkerfreemarker模版

7) httpheader返回一个已配置好的HTTP头信息响应

8) stream将原始数据作为流传递回浏览器端

9) velocity呈现Velocity模板

10) xslt该XML可以通过XSL模板进行转换

11) plaintext返回普通文本类容