Struts2 中action之间的跳转(分享)
例如从你的login.action到register.action 有两种实现方式1. 设置type="redirect"
<package name="struts" extends="struts-default">
<action name="login" class="com.aihua.example.LoginAction">
<result name="success" type="redirect">register.action </result>
<result name="error">/index.jsp </result>
</action> </package> 2.设置 type="chain"<package name="struts" extends="struts-default">
<action name="login" class="com.aihua.example.LoginAction">
<result name="success" type="chain" >action 名称 </result>
<result name="error">/index.jsp </result>
</action>
</package>
当type为chain 时，说明是action链,运行完第一个action java文件接着会运行第二个action JAVA 文件，相当于forward(客户端的url不会改变).当type为redirect时，说明会跳转到第二个action的url (客户端的url会改变)从action1直接跳转到action2,有两种方法：

1. 需要保存前一个action的属性信息时使用，保存住action1的request对象:
<result type= "chain " name="a2">action2</result>
2. 不保存前一个action的参数可以用这种方法:
<result type= "redirectAction "> action2</result>

Struts.xml
Java代码

1. <?xml version="1.0" encoding="UTF-8" ?>
2. <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN""http://struts.apache.org/dtds/struts-2.1.dtd">
3. <struts>
5. <!--一个action跳转到另一个action 跳转方式为chain 会保留request对象 redirectAction 则不能保留-->
6. <package name="limin" extends="struts-default">
7. <action name="sa1_*" class="com.Action.StrAction1" method="{1}">
8. <!--<result type="chain" name="sa2">sa2_sa2</result> -->
9. <result type="redirectAction" name="sa2">sa2_sa2</result>
10. </action>
12. <action name="sa2_*" class="com.Action.StrAction2" method="{1}">
13. <result>/index.jsp</result>
14. </action>
15. </package>
17. </struts>

[java] view plaincopyprint?

1. <?xml version="1.0" encoding="UTF-8" ?>
2. <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
3. <struts>
5. <!--一个action跳转到另一个action 跳转方式为chain 会保留request对象 redirectAction 则不能保留-->
6. <package name="limin" extends="struts-default">
7. <action name="sa1_*" class="com.Action.StrAction1" method="{1}">
8. <!--<result type="chain" name="sa2">sa2_sa2</result> -->
9. <result type="redirectAction" name="sa2">sa2_sa2</result>
10. </action>
12. <action name="sa2_*" class="com.Action.StrAction2" method="{1}">
13. <result>/index.jsp</result>
14. </action>
15. </package>
17. </struts>

action1
Java代码

1. public class StrAction1 {
2. String a ="liminhappygirl";
3. public String getA() {
4. return a;
5. }
6. public void setA(String a) {
7. this.a = a;
8. }
9. public String sa1() {
10. HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
11. request.setAttribute("limin", "happygirl");
12. System.out.println("sal已经执行");
13. return "sa2";
14. }
16. }

[java] view plaincopyprint?

1. public class StrAction1 {
2. String a ="liminhappygirl";
3. public String getA() {
4. return a;
5. }
6. public void setA(String a) {
7. this.a = a;
8. }
9. public String sa1() {
10. HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
11. request.setAttribute("limin", "happygirl");
12. System.out.println("sal已经执行");
13. return "sa2";
14. }
16. }

action2
Java代码

1. public class StrAction2 {
2. public String sa2() {
3. HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
4. //当type="chain" 时能保存住request对象
5. System.out.println(request.getAttribute("limin"));
6. return Action.SUCCESS;
7. }
8. }

[java] view plaincopyprint?

1. public class StrAction2 {
2. public String sa2() {
3. HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
4. //当type="chain" 时能保存住request对象
5. System.out.println(request.getAttribute("limin"));
6. return Action.SUCCESS;
7. }
8. }