spring aop ioc mvc

package com.lihaozhe.spring.mvc.util.servlet; import com.lihaozhe.spring.mvc.servlet.TestServlet; import com.lihaozhe.spring.mvc.util.json.BaseJacksonUtil; import com.lihaozhe.spring.mvc.util.response.ResponseResult; import com.lihaozhe.spring.mvc.util.response.ResultCode; import org.apache.commons.io.IOUtils; import org.apache.commons.lang3.StringUtils; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.BufferedReader; import java.io.IOException; import java.io.PrintWriter; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; /** * @author 李昊哲 * @version 1.0.0 2022/7/21 上午9:06 */ public class BaseServlet extends HttpServlet { @Override protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 处理中文乱码 request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=utf-8"); // ajax跨域 response.setHeader("Cache-Control", "no-cache"); response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, PATCH, OPTIONS, DELETE"); response.setHeader("Access-Control-Max-Age", "3600"); response.setHeader("Access-Control-Allow-Headers", "Origin, Accept, x-auth-token,Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers, Authorization, Code-Token, Access-Token"); // response.setHeader("Access-Control-Allow-Origin", "http://192.168.18.65:5500"); response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin")); response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("XDomainRequestAllowed", "1"); System.out.println("sessionid = " + request.getSession().getId()); String requestMethod = request.getMethod(); if ("OPTIONS".equalsIgnoreCase(requestMethod)) { // 避免非正常请求发送到后端程序 return; } String methodName = request.getParameter("methodName"); if (StringUtils.isEmpty(methodName)) { ResponseResult result = ResponseResult.getInstance(); result.setCode(ResultCode.PARAM_ERROR.getCode()); result.setMsg(ResultCode.PARAM_ERROR.getMsg()); printJson(response, result); return; } Class<? extends BaseServlet> aClass = this.getClass(); String contentType = request.getContentType(); try { if (!StringUtils.isEmpty(contentType) && (contentType.contains("application/json") || contentType.contains("text/plain"))) { // 客户端发送json格式字符串 BufferedReader reader = request.getReader(); String text = IOUtils.toString(reader); Method method = aClass.getDeclaredMethod(methodName, HttpServletRequest.class, HttpServletResponse.class, String.class); method.setAccessible(true); method.invoke(this, request, response, text); } else { // 端发送表单数据 Method method = aClass.getDeclaredMethod(methodName, HttpServletRequest.class, HttpServletResponse.class); method.setAccessible(true); method.invoke(this, request, response); } } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) { throw new RuntimeException(e); } } /** * 向页面发送字符串 * * @param response HttpServletResponse * @param text 发送字符串 * @throws IOException */ public void printText(HttpServletResponse response, String text) throws IOException { response.setContentType("application/json;charset=utf-8"); PrintWriter writer = response.getWriter(); writer.println(text); writer.flush(); writer.close(); } /** * 向页面发送JSON格式字符串 * * @param response HttpServletResponse * @param object * @throws IOException */ public void printJson(HttpServletResponse response, Object object) throws IOException { response.setContentType("application/json;charset=utf-8"); PrintWriter writer = response.getWriter(); writer.println(BaseJacksonUtil.objectToJson(object)); writer.flush(); writer.close(); } /** * jsonp 向页面发送字符串 * * @param request * @param response * @param text * @throws IOException */ public void printText4Jsonp(HttpServletRequest request, HttpServletResponse response, String text) throws IOException { String method = request.getParameter("callback"); String json = method + "(" + text + ")"; response.setContentType("application/json;charset=utf-8"); PrintWriter writer = response.getWriter(); writer.println(json); writer.flush(); writer.close(); } /** * jsonp 向页面发送json格式字符串 * * @param request * @param response * @param object * @throws IOException */ public void printJson4Jsonp(HttpServletRequest request, HttpServletResponse response, Object object) throws IOException { String method = request.getParameter("callback"); String json = method + "(" + BaseJacksonUtil.objectToJson(object) + ")"; response.setContentType("application/json;charset=utf-8"); PrintWriter writer = response.getWriter(); writer.println(json); writer.flush(); writer.close(); } public void forward(HttpServletRequest request, HttpServletResponse response, String path) throws ServletException, IOException { request.getRequestDispatcher(path).forward(request, response); return; } public void forward(HttpServletRequest request, HttpServletResponse response, String path, String prefix, String subfix) throws ServletException, IOException { request.getRequestDispatcher(prefix + path + subfix).forward(request, response); return; } private final static String prefix = "/WEB-INF/jsp/"; private final static String subfix = ".jsp/"; public void forwardWithPrefixAndSubfix(HttpServletRequest request, HttpServletResponse response, String path) throws ServletException, IOException { request.getRequestDispatcher(prefix + path + subfix).forward(request, response); return; } }