cloth项目1增加环节

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cloth项目——增加环节

配置文件

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建包建类controller,jopo,mapper,service,util

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cloth数据库的设置

：基本数据类型，Ingeter，长度，空值，主键，自动递增

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detail数据库设置

：基本数据类型，长度，空值，主键，自动递增，外键设置

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外键设置

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com.bjsxt.util.BaseServlet

package com.bjsxt.util;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;public class BaseServlet extends HttpServlet {@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {req.setCharacterEncoding("UTF-8");resp.setCharacterEncoding("UTF-8");resp.setContentType("text/html;charset=UTF-8");String method = req.getParameter("method");Class clazz = this.getClass();// 谁调用了当前方法 谁就是thistry {Method declaredMethod = clazz.getDeclaredMethod(method, HttpServletRequest.class, HttpServletResponse.class);declaredMethod.setAccessible(true);declaredMethod.invoke(this,req,resp);} catch (Exception e) {e.printStackTrace();}}
}

com.bjsxt.util.MybatisUtil/需要配置文件和jar包，js包，否则报错

package com.bjsxt.util;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import java.io.InputStream;public class MybatisUtil {private static SqlSessionFactory factory = null;private static ThreadLocal<SqlSession> th = new ThreadLocal<>();static {try {InputStream inputStream = Resources.getResourceAsStream("mybatis.xml");factory = new SqlSessionFactoryBuilder().build(inputStream);} catch (Exception e) {e.printStackTrace();}}//获得session对象public static SqlSession getSession() {SqlSession sqlSession = th.get();if (sqlSession == null) {sqlSession = factory.openSession();th.set(sqlSession);}return th.get();}//关闭session的操作public static void closed() {SqlSession sqlSession = th.get();if (sqlSession != null) {sqlSession.close();}th