struts2不调用类型转换器的问题
这是web项目结构图
问题是struts2根本不调用类型转换器,直接调用了execute()方法,结果报了空指针异常,我把关键配置的文件和代码放在靠上面,希望大神帮我解决，谢谢哈
以下是文件信息
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>src/struts.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts> <package name="struts" extends="struts-default" namespace="/"> <action name="userAction" class="action.UserAction"> <result name="success">/test.jsp</result> </action> </package> </struts>converter.UserConverter
package converter;
import java.util.Map;
import entity.User;
import ognl.DefaultTypeConverter;
public class UserConverter extends DefaultTypeConverter {
public Object convertValue(Map context, Object value, Class toType) {
System.out.println("converter..");
if(User.class == toType){
User u=new User();
String str=((String[])value)[0];
String[] info=str.split(";");
u.setUsername(info[0]);
u.setPwd(info[1]);
return u;
}
return null;
}
}action.UserActionpackage action;
import com.opensymphony.xwork2.ActionSupport;
import entity.User;
public class UserAction extends ActionSupport{
private User u;
public User getU() {
return u;
}
public void setU(User u) {
this.u = u;
}
public String execute() throws Exception{
System.out.println(u.getUsername());
System.out.println(u.getPwd());
return "success";
}
}action/UserAction-conversion.propertiesu=converter.UserConverterentity.User
package entity;
public class User {
private String username;
private String pwd;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
}user.jsp<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body style="font-size:30px;">
<form action="userAction.action">用户名和密码用";"隔开<br/> username:<input type="text" name="username"><br/> <input type="submit" value="submit"> </form> </body> </html>test.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body style="font-size:30px;">
test..
</body>
</html>如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
你好，我也遇到同样的问题，属性名称对应好后依然无法调用，可以看看你的proterties文件吗？
一楼正解，3Q！