57 lines
2.2 KiB
Java
57 lines
2.2 KiB
Java
package com.hellogithub.servlet;
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import com.alibaba.fastjson.JSONObject;
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import com.hellogithub.service.UserService;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.http.*;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.HashMap;
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public class selectUserLabelServlet extends HttpServlet {
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private UserService userService = new UserService();
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@Override
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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doPost(req, resp);
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}
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@Override
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protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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resp.setCharacterEncoding("UTF-8");
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resp.setContentType("text/html; charset=utf-8");
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// 设置响应头允许ajax跨域访问
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String curOrigin = req.getHeader("Origin");
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resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
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resp.setHeader("Access-Control-Allow-Credentials", "true");
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resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
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resp.setHeader("Access-Control-Max-Age", "3600");
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resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
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resp.setContentType("application/json;charset=UTF-8");
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PrintWriter writer = resp.getWriter();
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String id = req.getParameter("xxxxx");
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String jsonString = JSONObject.toJSONString(userService.selectLabel(Integer.parseInt(id)));
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writer.println(jsonString);
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writer.close();
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}
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public void setResult(Integer code, String msg, PrintWriter writer) {
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HashMap<String, Object> result = new HashMap<>();
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result.put("code", code);
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result.put("msg", msg);
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String jsonString = JSONObject.toJSONString(result);
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writer.println(jsonString);
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writer.close();
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}
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public void setResultError(String msg, PrintWriter writer) {
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setResult(500, msg, writer);
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}
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public void setResultOK(String msg, PrintWriter writer) {
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setResult(200, msg, writer);
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}
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}
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