spring3與struts2 註解ajax實現

spring3.2 ajax ：

@RequestMapping(value = "/fct/ajax_addUser.do", method = RequestMethod.POST)

@ResponseBody

public String ajax_addUser(

@RequestParam(value = "name", required = false) String name,

@RequestParam(value = "age", required = false) String age,

@RequestParam(value = "sex", required = false) String sex) {

String sql = "INSERT INTO user(name,age,sex) VALUES(?,?,?)";

Object[] params = new Object[] { name, age, sex };

int rows = udao.exec(sql, params); // 插入到數據庫表

return "增長了" + rows + "條用戶信息！"; // 返回提示信息

}

struts2.1 ajax：

在action類名上寫註解：

@Action(value = "/user", results = {

@Result(name = "add", location = "user/add_user.jsp"),

@Result(name = "error", location = "sysError.jsp") })

ajax調用的方法：

public String add() {

String result = "1";

try {

if (PubMethod.isEmpty(username) || PubMethod.isEmpty(password)) {

result = "用戶名和密碼都不能爲空！";

} else {

List<User> list = userDAO.findByUsername("" + username);

if (list != null && list.size() != 0) {

result = "該用戶名已被使用，請輸入其餘用戶名！";

} else {

User user = new User();

user.setIsadmin(isadmin);

user.setPassword(password);

user.setUsername(username);

userDAO.save(user); // 保存數據

}

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

result = "0";

}

ulog.info(result);

writeData(result); // 返回信息

return null;

}

/**

* @category ajax回寫數據

* @param data

*/

public void writeData(String data) {

// 獲取原始的PrintWriter對象,以便輸出響應結果,而不用跳轉到某個試圖

HttpServletResponse response = ServletActionContext.getResponse();

// 設置字符集

response.setContentType("text/plain");// 設置輸出爲文字流

response.setCharacterEncoding("UTF-8");

PrintWriter out;

try {

out = response.getWriter();

// 直接輸出響應的內容

out.println(data);

out.flush();

out.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}