struts2 使用注解方式配置

1、导入convention 包

2、java：

package com.struts.base.hello;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONArray;

import org.apache.struts2.ServletActionContext;

import org.apache.struts2.convention.annotation.Action;

import org.apache.struts2.convention.annotation.Namespace;

import org.apache.struts2.convention.annotation.ParentPackage;

import org.apache.struts2.convention.annotation.Result;

import com.opensymphony.xwork2.ActionSupport;

import com.struts.base.model.User;

@Namespace("/wangh/test")

@ParentPackage("struts-default")

@Action(value = "mytest", results = { @Result(name = "success", location = "/base/convention/test.jsp") })

public class TestAction extends ActionSupport {

@Override
public String execute() throws Exception {
// List<User> users = new ArrayList<User>();
// for (int i = 0; i < 3; i++) {
// User user = new User();
// user.setUserName("zhanghua" + i);
// user.setPWD("pwd" + i);
// users.add(user);
// }
//
// // 获得response
// HttpServletResponse response = ServletActionContext.getResponse();
// response.setContentType("text/html");
// PrintWriter pw = null;
// try {
// pw = response.getWriter();
// pw.print(JSONArray.fromObject(users).toString());
// return "success";
// } catch (Throwable e) {
// e.printStackTrace();
// } finally {
// if (pw != null) {
// pw.close();
// }
// }
return SUCCESS;
}

@Action(value = "outjson")
public void outJSON() {
List<User> users = new ArrayList<User>();
for (int i = 0; i < 3; i++) {
User user = new User();
user.setUserName("zhanghua" + i);
user.setPWD("pwd" + i);
users.add(user);
}

// 获得response
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/html");
PrintWriter pw = null;
try {
pw = response.getWriter();
pw.print(JSONArray.fromObject(users).toString());
pw.flush();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (pw != null) {
pw.close();
}
}
}

}

注意方法注解访问方式  ：
http://localhost:8080/strutsDemo/wangh/test/outjson.action
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