src/sanrenxing/analysis/servlet/AnalysisServlet.java

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package sanrenxing.analysis.servlet;

import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import sanrenxing.analysis.dao.AnalysisDao;
import sanrenxing.analysis.dao.impl.AnalysisDaoImpl;
import sanrenxing.analysis.domain.Analysis;
import sanrenxing.analysis.domain.AnalysisTo;

import javax.jnlp.IntegrationService;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 功能:试题难易servlet
 * 编写者:
 * 创建时间：2020/10/13 10:29
 * 版本:
 */
@WebServlet("/AnalysisServlet")
public class AnalysisServlet extends HttpServlet {
    //定义数据层对象
    private AnalysisDao analysisDao=new AnalysisDaoImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //设置请求字符编号
        req.setCharacterEncoding("utf-8");
        //设置请求内容类型
        resp.setContentType("text/html");
        //设置响应字符集
        resp.setCharacterEncoding("utf-8");

        //接收来自客户端的方法名称
        String method=req.getParameter("method");
        //判断为查找所有
        if (method.equals("findAll")){
            //调用查找所有的方法
            this.findAll(req,resp);
        }else if (method.equals("updateSubjectAnalysis")){//判断请求的方法是否为更新试题难易
            //调用更新试题难易程度方法
            this.updateSubjectAnalysis(req,resp);
        }
    }

    /**
     * 更新试题难易
     * @param req
     * @param resp
     */
    private void updateSubjectAnalysis(HttpServletRequest req, HttpServletResponse resp) throws