关于insert返回值

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

package com.imooc.mybatis;
 
 
import com.imooc.dto.GoodsDTO;
import com.imooc.entity.Goods;
import com.imooc.entity.Student;
import com.imooc.mybatis.utils.MyBatisUtils;
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 org.junit.Test;
 
import javax.xml.ws.RequestWrapper;
import java.io.IOException;
import java.io.Reader;
import java.sql.Connection;
import java.util.*;
 
public class MyBatisTestor {
    private Object Goods;
 
    @Test
    public void testSqlSessionFactory() throws IOException {
        //利用Reader加载classpath下的mybatis-config.xml核心配置文件
        Reader reader = Resources.getResourceAsReader("mybatis-config.xml");
        //初始化SqlSessionFactory对象,同时解析mybatis-config.xml文件
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
        System.out.println("SessionFactory加载成功");
 
    }
 
    @Test
    public void testMyBatisUtils(){
        SqlSession sqlSession = null;
        try{
        sqlSession=MyBatisUtils.openSession();
        Connection connection=sqlSession.getConnection();
        System.out.println(connection);
 
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            MyBatisUtils.closeSession(sqlSession);
        }
    }
    @Test
    public void testSelectAll(){
        SqlSession session=null;
        try{
            session=MyBatisUtils.openSession();
            List<Goods> list=session.selectList("goods.selectAll");
            for (Goods g:list
            ) {
                System.out.println(g);
            }
 
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            MyBatisUtils.closeSession(session);
        }
 
    }
 
    @Test
    public void testSelectAllStudent(){
        SqlSession session=null;
        try{
            session=MyBatisUtils.openSession();
            List<Student> list=session.selectList("student.selectAll");
            for (Student s:list
            ) {
                System.out.println(s);
            }
 
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            MyBatisUtils.closeSession(session);
        }
 
    }
 
    @Test
   public void testSelectById(){
        SqlSession session=null;
        try{
 
            session = MyBatisUtils.openSession();
            Goods = session.selectOne("goods.selectById", 1602);
            System.out.println(Goods);
        }catch(
                Exception e){
            e.printStackTrace();
        }finally {
            MyBatisUtils.closeSession(session);
        }
    }
 
    @Test
    public void selectGoodsMap(){
        SqlSession session=null;
        try{
 
            session = MyBatisUtils.openSession();
            List<Map> list = session.selectList("goods.selectGoodsMap");
            for (Map map : list
            ) {
                System.out.println(map);
            }
//            System.out.println(Goods);
        }catch(Exception e){
            e.printStackTrace();
        }finally {
            MyBatisUtils.closeSession(session);
        }
    }
 
    @Test
    public void selectGoodsDTO(){
        SqlSession session=null;
        try{
 
            session = MyBatisUtils.openSession();
            List<GoodsDTO> list = session.selectList("goods.selectGoodsDTO");
            for (GoodsDTO g : list
            ) {
                 System.out.println(g);
            }
//            System.out.println(Goods);
        }catch(Exception e){
            e.printStackTrace();
        }finally {
 
            MyBatisUtils.closeSession(session);
        }
    }
 
    @Test
    public void insert(){
        SqlSession session=null;
        try{
 
            session = MyBatisUtils.openSession();
            Goods goods = new Goods();
            goods.setTitle("test");
            goods.setSubTitle("test123");
            goods.setOriginalCost(200f);
            goods.setCurrentPrice(100f);
            goods.setDiscount(0.5f);
            goods.setIsFreeDelivery(1);
            goods.setCategoryId(43);
            int num=session.insert("goods.insert",goods);
            System.out.println(num);
            System.out.println(goods.getGoodsId());
            session.commit();
 
        }catch(Exception e){
            e.printStackTrace();
            if(session!=null){
                session.rollback();
            }
        }finally {
 
            MyBatisUtils.closeSession(session);
        }
    }
 
    @Test
    public void insertStudent(){
        SqlSession session = null;
        try {
 
            session=MyBatisUtils.openSession();
            Student student = new Student();
            student.setName("楠楠");
            student.setRegNo(20171208);
            student.setAge(26);
            student.setGrade("2013");
            student.setMajor("哲学系");
            student.setSex("男");
            int num = session.insert("goods.insertstudent", student);
            System.out.println(num);
           session.commit();
             
        } catch (Exception e) {
            e.printStackTrace();
            if (session != null) {
                session.rollback();
            }
        }finally {
            session.close();
        }
    }
}