错误debug后
得到了There is no read method for container的错误
于是我new了一个实体类
代码语言：javascript复制 1 package com.unity;
2
3 public class Student {
4 private String studentName;
5
6 public Student(String studentName) {
7 this.studentName = studentName;
8 }
9
10 public String getStudentName() {
11 return studentName;
12 }
13 //
14 public void setStudentName(String studentName) {
15 this.studentName = studentName;
16 }
17 }并在action导入
代码语言：javascript复制 1 package com.action;
2
3 import com.opensymphony.xwork2.ActionContext;
4 import com.opensymphony.xwork2.ActionSupport;
5 import com.opensymphony.xwork2.util.ValueStack;
6 import com.unity.Student;
7
8 public class HelloWorldAction extends ActionSupport {
9 /**
10 *
11 */
12 private static final long serialVersionUID = -7840227232203094654L;
13 private String studentName;
14
15 public String getStudentName() {
16 return studentName;
17 }
18
19 public void setStudentName(String studentName) {
20 this.studentName = studentName;
21 }
22
23 private String password;
24
25 public String execute() {
26 System.out.println("execute.....");
27 System.out.println("studentName:" studentName);
28 System.out.println("password:" password);
29 // ValueStack vs=ActionContext.getContext().getValueStack();
30 ActionContext context = ActionContext.getContext();
31 ValueStack vs = context.getValueStack();
32 // 值栈的栈顶
33
34 Student student = new Student("111111");
35
36 vs.push(student);
37 return "info";
38 }
39
40 public String getPassword() {
41 return password;
42 }
43
44 public void setPassword(String password) {
45 this.password = password;
46 }
47 }虽然没有了There is no read method for container的错误
但是依然无法用el得到值
所以debug可以去死了
后来直接FQ啃英文的狗屎
发现有一个版本的structs2
默认关了页面的el表达式
强制你使用ognl.........
最终解决方法
代码语言：javascript复制1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8" isELIgnored="false"%>
//isELIgnored 是否无视el表达式 重新设置为false
但是我后来发现第二个解决方法
同一版本的structs2在不使用maven的情况下
倒没有出现这样的问题
最后总结
为了规范，哥们在maven的情况下，用struts2就用ogln吧，硬是用el加上那句isELIgnored="false"就行了 ，
最后放点取值的方法
代码语言：javascript复制1 <br> 密码:${password }
2 <br> 姓名1:<%=request.getParameter("studentName")%>
3 <br> 姓名2:${studentName}
4 <br> 姓名3:
5 <s:property value="[0].studentName" />
6 <br> 姓名4:
7 <s:property value="[1].studentName" />
8 <br> 姓名5:${requestScope.studentName} 1 public class HelloWorldAction extends ActionSupport {
2 /**
3 *
4 */
5 private static final long serialVersionUID = -7840227232203094654L;
6 private String studentName;
7
8 public String getStudentName() {
9 return studentName;
10 }
11
12 public void setStudentName(String studentName) {
13 this.studentName = studentName;
14 }
15
16 private String password;
17
18 public String execute() {
19 System.out.println("execute.....");
20 System.out.println("studentName:" studentName);
21 System.out.println("password:" password);
22 // ValueStack vs=ActionContext.getContext().getValueStack();
23 ActionContext context = ActionContext.getContext();
24 ValueStack vs = context.getValueStack();
25 // 值栈的栈顶
26 Student student = new Student("111111");
27 vs.push(student);
28 return "info";
29 }
30
31 public String getPassword() {
32 return password;
33 }
34
35 public void setPassword(String password) {
36 this.password = password;
37 }
38 } 1 public class Student {
2 private String studentName;
3
4 public Student(String studentName) {
5 this.studentName = studentName;
6 }
7
8 public String getStudentName() {
9 return studentName;
10 }
11 //
12 public void setStudentName(String studentName) {
13 this.studentName = studentName;
14 }
15 }图片
