idea使用SpringBoot和Spring和Mybatis来实现增删改查
需求：
使用新SSM来实现增删改查
步骤
第一步：看最终包结构
- 纠正：数据库连接池部分还有整合mybatis和springboot
- 这里主要是导入依赖的jar包
第二步：配置pom.xml
- 导包springBoot支持jdk1.8以上的，所以电脑要安装jdk.1.8
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>com.aaagroupId>
<artifactId>SpringbootMybatisDemoartifactId>
<version>1.0-SNAPSHOTversion>
<packaging>warpackaging>
<name>SpringbootMybatisDemo Maven Webappname>
<url>http://www.example.comurl>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.0.4.RELEASEversion>
<relativePath/>
parent>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.7maven.compiler.source>
<maven.compiler.target>1.7maven.compiler.target>
properties>
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.11version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>1.3.2version>
dependency>
<dependency>
<groupId>com.oraclegroupId>
<artifactId>ojdbc6artifactId>
<version>11.2.0.4.0version>
dependency>
dependencies>
<build>
<finalName>SpringbootMybatisDemofinalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-pluginartifactId>
<version>3.0.0version>
plugin>
<plugin>
<artifactId>maven-resources-pluginartifactId>
<version>3.0.2version>
plugin>
<plugin>
<artifactId>maven-compiler-pluginartifactId>
<version>3.7.0version>
plugin>
<plugin>
<artifactId>maven-surefire-pluginartifactId>
<version>2.20.1version>
plugin>
<plugin>
<artifactId>maven-war-pluginartifactId>
<version>3.2.0version>
plugin>
<plugin>
<artifactId>maven-install-pluginartifactId>
<version>2.5.2version>
plugin>
<plugin>
<artifactId>maven-deploy-pluginartifactId>
<version>2.8.2version>
plugin>
plugins>
pluginManagement>
build>
project>
第三步：application.properties
spring.datasource.url=jdbc:oracle:thin:@localhost:1521:orcl
spring.datasource.username=scott
spring.datasource.password=luruihua
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
#实体别名
mybatis.typeAliasesPackage=com.aaa.sb.entity
#mapper文件扫描
mybatis.mapperLocations=classpath\:mapper/*.xml
#工程名
server.servlet.context-path=/sb
#端口号
server.port=8080
#tomcat编码
server.tomcat.uri-encoding=UTF-8
- 配置结束
第五步：java代码
DeptController
package com.aaa.sb.controller;
import com.aaa.sb.service.DeptService;
import com.aaa.sb.util.PageUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* className:DeptController
* discription:
* author:zz
* createTime:2018-11-21 11:32
*/
@RestController
@RequestMapping("/dept")
public class DeptController {
//依赖注入
@Autowired
private DeptService deptService;
/**
* 部门列表方法
* @return
*/
@RequestMapping("/list")
public Object list(){
List<Map> list = deptService.getList();
return list;
}
/**
* 添加
* @return
*/
@RequestMapping("/insertDept")
public Object add(@RequestParam Map map){
int i = deptService.insertDept(map);
Map map1 = new HashMap();
if (i > 0) {
map1.put("msg","添加成功！");
} else {
map1.put("msg","添加失败！");
}
return map1;
}
/**
* 更新
* @return
*/
@RequestMapping("/updateDeptMsg")
public Object updateDeptMsg(@RequestParam Map map){
int i = deptService.updateDeptMsg(map);
Map map1 = new HashMap();
if (i > 0) {
map1.put("msg","更新成功！");
} else {
map1.put("msg","更新失败！");
}
return map1;
}
/**
* 删除新闻
* @return
*/
@RequestMapping("/deleteOne")
public Object deleteOne(@RequestParam Map map) {
int i = deptService.deleteOne(map);
Map map1 = new HashMap();
if (i > 0) {
map1.put("msg","删除成功！");
} else {
map1.put("msg","删除失败！");
}
return map1;
}
/**
* 通过deptno查dept
* @return
*/
@RequestMapping("/selectDeptById")
public Object selectDeptById(@RequestParam Map paramMap, Model model) {
List<Map> deptList = deptService.selectDeptById(paramMap);
return deptList;
}
}
deptService.java
package com.aaa.sb.service;
import java.util.List;
import java.util.Map;
/**
* className:DeptService
* discription:
* author:zz
* createTime:2018-11-21 11:28
*/
public interface DeptService {
/**
* 部门列表查询
* @return
*/
List<Map> getList();
/**
* 获取总数量
* @return
*/
int getPageCount(Map map);
/**
* 部门添加
* @param map
* @return
*/
int insertDept(Map map);
/**
* 通过deptno查部门
* @param paramMap
* @return
*/
List<Map> selectDeptById(Map paramMap);
/**
* 更新
* @param map
* @return
*/
int updateDeptMsg(Map map);
/**
* 删除
* @param map
* @return
*/
int deleteOne(Map map);
}
deptServiceImpl
package com.aaa.sb.service;
import com.aaa.sb.dao.DeptDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
/**
* className:DeptServiceImpl
* discription:
* author:zz
* createTime:2018-11-21 11:29
*/
@Service
public class DeptServiceImpl implements DeptService {
//依赖注入
@Autowired
private DeptDao deptDao;
/**
* 部门查询
* @return
*/
@Override
public List<Map> getList() {
return deptDao.getList();
}
@Override
public int getPageCount(Map map) {
return deptDao.getPageCount(map);
}
/**
* 部门添加
* @param map
* @return
*/
@Override
public int insertDept(Map map) {
return deptDao.insertDept(map);
}
/**
* 通过deptno查dept
* @param paramMap
* @return
*/
@Override
public List<Map> selectDeptById(Map paramMap) {
return deptDao.selectDeptById(paramMap);
}
/**
* 更新
* @param map
* @return
*/
@Override
public int updateDeptMsg(Map map) {
return deptDao.updateDeptMsg(map);
}
/**
* 删除
* @param map
* @return
*/
@Override
public int deleteOne(Map map) {
return deptDao.deleteOne(map);
}
}
deptDao.java
package com.aaa.sb.dao;
import java.util.List;
import java.util.Map;
/**
* className:DeptDao
* discription:
* author:zz
* createTime:2018-11-21 11:22
*/
public interface DeptDao {
/**
* 部门列表查询
* @return
*/
List<Map> getList();
/**
* 获取总数量
* @return
*/
int getPageCount(Map map);
/**
* 部门添加
* @param map
* @return
*/
int insertDept(Map map);
/**
* 通过deptno查dept
* @param paramMap
* @return
*/
List<Map> selectDeptById(Map paramMap);
/**
* 更新
* @param map
* @return
*/
int updateDeptMsg(Map map);
/**
* 删除
* @param map
* @return
*/
int deleteOne(Map map);
}
SpringBootMainApplication.java
package com.aaa.sb;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* className:SpringBootMainApplication
* discription:
* author:luRuiHua
* createTime:2018-11-21 15:15
*/
@SpringBootApplication
@MapperScan("com.aaa.sb.dao")
public class SpringBootMainApplication {
/**
* 主函数
* @param args
*/
public static void main(String[] args) {
SpringApplication.run(SpringBootMainApplication.class);
}
}
DeptDaoMapper.xml
<mapper namespace="com.aaa.sb.dao.DeptDao">
<select id="getList" resultType="map">
select * from dept
select>
<select id="getPageCount" resultType="int">
select count(*) from dept
select>
<insert id="insertDept">
insert into dept values (seq_dept_id.nextval,#{dname},#{loc})
insert>
<select id="selectDeptById" resultType="map">
select deptno,dname,loc from dept where deptno = #{deptNo}
select>
<update id="updateDeptMsg">
update dept
<set>
<if test="dname != null">
dname = #{dname},
if>
<if test="loc != null">
loc = #{loc},
if>
set>
where deptno = #{deptNo}
update>
<delete id="deleteOne">
delete from dept where deptno = #{deptNo}
delete>
mapper>
add.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Titletitle>
<script src="/sb/js/jquery-1.8.3.js">script>
head>
<body>
<center>
<h1>部门添加h1>
<table>
<tbody>
<tr>
<td>部门名字td><td><input id="dname" type="text">td>
tr>
<tr>
<td>部门位置td><td><input id="loc" type="text">td>
tr>
<tr>
<td colspan="2" align="center"><input onclick="insertNews()" type="button" value="添加">td>
tr>
tbody>
table>
center>
<script>
//添加按钮
function insertNews() {
var dname = $("#dname").val();
var loc = $("#loc").val();
$.get(
"/sb/dept/insertDept",
{dname:dname,loc:loc},
function(data) {
alert(data.msg);
location.href="list.html";
},
"json"
);
}
script>
body>
html>
list.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Titletitle>
<script src="/sb/js/jquery-1.8.3.js">script>
<script>
$(function(){
$.ajax({
url:"/sb/dept/list",//请求地址
dataType:"json",//返回值格式
success:function(data){
if(data!=''){
var tempTrs="";
for (var i = 0; i < data.length; i++) {
var obj = data[i];
tempTrs+=""+obj.DEPTNO+" "+obj.DNAME+" "+obj.LOC+" " +
"+obj.DNAME+"> " +
" update.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Titletitle>
<script src="/sb/js/jquery-1.8.3.js">script>
<script>
$(function(){
$.ajax({
url:"/sb/dept/list",//请求地址
dataType:"json",//返回值格式
success:function(data){
if(data!=''){
var tempTrs="";
for (var i = 0; i < data.length; i++) {
var obj = data[i];
tempTrs+=""+obj.DEPTNO+" "+obj.DNAME+" "+obj.LOC+" " +
"+obj.DNAME+"> " +
" PageUtil.java
package com.aaa.sb.util;
import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;
/**
* className:PageUtil
* discription:
* author:luRuiHua
* createTime:2018-11-19 11:48
*/
public class PageUtil {
//分页的要素
private int pageNo;//页码（第几页）
private int pageSize;//每页显示数量
private int totalSize;//总条数
//临时变量
private String url;//请求的url
private String pageString;//拼接后的分页字符串
/**
* 构造
* @param pageNo
* @param pageSize
* @param totalSize
* @param request 可以用来获取当前请求的地址和所有的请求参数
*/
public PageUtil(int pageNo, int pageSize, int totalSize, HttpServletRequest request){
this.pageNo = pageNo;
this.pageSize = pageSize;
this.totalSize = totalSize;
//获取本次请求的url（从项目名称开始）
url = request.getRequestURI()+"?"; // /web20180918/jsp/page/page3.jsp?pageNo=2&dname=内&id=&aa=11&bb=22
//getParameterNames获取所有请求中带的参数的名称 pageNo=2&dname=内&id= getParameterNames获取到结果为：
Enumeration<String> parameterNames = request.getParameterNames();//获取参数名称集合 [pageNo,dname,id]
while(parameterNames.hasMoreElements()){//判断有没有下一个元素
String parameterName = parameterNames.nextElement();//第一次取到的pageNo
//!"pageNo".equals(parameterName) 每次请求，pageNo都在变化，所以下面拼接pageString一直会带上
if(!"pageNo".equals(parameterName)){
//charAt 得到字符串某个位置的上的字符
if(url.charAt(url.length()-1)=='?'){//判断请求的最后位置是否是？
url+=parameterName+"="+request.getParameter(parameterName);// /web20180918/jsp/page/page3.jsp?dname=内
}else{
url+="&"+parameterName+"="+request.getParameter(parameterName);///web20180918/jsp/page/page3.jsp?dname=内&id=&&aa=11&
}
}
}
//为了下面拼接简单
if(url.charAt(url.length()-1)!='?'){
url+="&";
}
}
// url =/web20180918/jsp/page/page3.jsp?dname=内&id=&&aa=11&
/**
* 拼装分页字符串
* @return
*/
public String getPageString(){
//计算总页数
int pageCount = totalSize%pageSize==0?totalSize/pageSize:totalSize/pageSize+1;
StringBuffer stringBuffer = new StringBuffer();
//上一页不能小于1
if(pageNo<1){
pageNo = 1;
}
if(pageNo>1){//不是第一页
stringBuffer.append("首页 上一页");
}else{
stringBuffer.append("首页 上一页");
}
stringBuffer.append(" ");
//不能大于最大页
if(pageNo>pageCount){
pageNo=pageCount;
}
if(pageNo<pageCount){//不是最大页（尾页）
stringBuffer.append("下一页 尾页");
}else{
stringBuffer.append("下一页 尾页");
}
stringBuffer.append(" ");
//拼装下拉第几页 //this.value select元素选中值
stringBuffer.append("第页 共"+totalSize+"条 "+pageCount+"页");
return stringBuffer.toString();
}
}