SSM整合步骤

SSM整合步骤，IDEA 一、创建Maven+web工程 IDEA中手动添加web支持的时候，不会默认把Artifacts里面项目的jar包放到lib包中，这个得自己手动加，如果是采用骨架方式创建的工程则不用，但是我习惯手动，所以得记住每次弄完需要Artifacts中手动创建lib文件夹,切记啊，如果你运行tomcat有NoClassDefFoundError异常，可以看看有没有lib文件夹

二、pom.xml中添加相关依赖



    4.0.0

    groupId
    06-ssm
    1.0-SNAPSHOT

    
        8
        8
    

    
        
        
            org.springframework
            spring-context
            5.2.5.RELEASE
        
        
        
            org.springframework
            spring-tx
            5.2.5.RELEASE
        
        
        
            org.springframework
            spring-jdbc
            5.2.5.RELEASE
        
        
        
            javax.servlet
            servlet-api
            2.5
        
        
        
            org.springframework
            spring-webmvc
            5.2.5.RELEASE
        
        
        
            com.fasterxml.jackson.core
            jackson-core
            2.9.0
        
        
        
            com.fasterxml.jackson.core
            jackson-databind
            2.9.0
        
        
        
            org.mybatis
            mybatis-spring
            1.3.1
        
        
        
            org.mybatis
            mybatis
            3.5.1
        
        
        
            com.alibaba
            druid
            1.1.12
        
        
        
            log4j
            log4j
            1.2.12
        
        
        
            mysql
            mysql-connector-java
            8.0.12
        
    

    
    
        
            
                src/main/java
                
                    
                    **
@Service
public class StudentServiceImpl implements StudentService {

    @Autowired
    private StudentDao studentDao;
    @Override
    public int addStudent(Student student) {
        return studentDao.insertStudent(student);
    }

    @Override
    public List querryStudent() {
        return studentDao.selectStudent();
    }
}

entity实体类:

package com.lebrwcd.entity;
public class Student {
    private Integer id;
    private String name;
    private String email;
    private Integer age;

    //set..get..toString..
}

controller:

package com.lebrwcd.controller;

import com.lebrwcd.service.StudentService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.lebrwcd.entity.Student;
import javax.annotation.Resource;
import java.util.List;


@RequestMapping("/student")
@Controller
public class StudentController {

    //service对象
    @Resource
    private StudentService studentService;

    //学生注册
    @RequestMapping(value = "/add.do")
    public ModelAndView doAdd(Student student){
        ModelAndView mv = new ModelAndView();
        int count = studentService.addStudent(student);
        if(count > 0 ){
            //添加成功
            mv.setViewName("success");
        }else{
            //注册失败
            mv.setViewName("error");
        }
        return mv;
    }

    //查询学生列表
    @RequestMapping(value = "/querry.do")
    @ResponseBody
    public List doQuerry(){
        return studentService.querryStudent();
    }
}

SSM整合步骤

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