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8.Spring-Boot之SpringJdbcTemplate整合Freemarker

2018-03-05 14:57 525 查看

1.创建maven工程2.包结构如下

3.pom.xml配置<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>4.0.0</modelVersion>
<groupId>springboot</groupId> <artifactId>testSpringBoot</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging>
<name>testSpringBoot</name> <url>http://maven.apache.org</url>
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties>  <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> <relativePath></relativePath> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>  
 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency>      <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency>
<dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.25</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.2</version> </dependency>          <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency>     <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency>

<dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> </dependencies>  <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> <pluginManagement> <plugins> <plugin>  <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin>  <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.2</version> </plugin>
</plugins> </pluginManagement> </build></project>4.创建启动类Application.java一般放在主包下，因为会有组件扫描package com.niugang;
import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.web.support.SpringBootServletInitializer;//解决包tomcat冲突//@EnableAutoConfiguration(exclude={WebMvcAutoConfiguration.class}) //组件扫描//@ComponentScan("com.niugang.controller")//springboot注解//springboot1.2+之后用@SpringBootApplication替代了三个注解//@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan //ComponentScan 也会自动扫描@configuration注解@SpringBootApplication
public class Application extends SpringBootServletInitializer{ public static void main(String[] args) { SpringApplication.run(Application.class,args); }}5.创建application.properties#web项目名称server.contextPath=/myweb#配置freemakerspring.freemarker.template-loader-path=/WEB-INF/viewspring.freemarker.cache=falsespring.freemarker.charset=UTF-8spring.freemarker.check-template-location=truespring.freemarker.content-type=text/htmlspring.freemarker.expose-request-attributes=truespring.freemarker.expose-session-attributes=truespring.freemarker.request-context-attribute=requestspring.freemarker.suffix=.html#引入jdbc相关配置spring.profiles.active=jdbc#修改默认HTTP编码，之前是在web.xml中过滤的，两个必须同时使用spring.http.enconding.charset=UTF-8spring.http.encoding.force=true6创建application-jdbc.properties和主的配置分开# 驱动配置信息spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.datasource.url = jdbc:mysql://localhost:3306/springboot?useUnicode=true&characterEncoding=utf-8 spring.datasource.username = rootspring.datasource.password = 123456spring.datasource.driverClassName = com.mysql.jdbc.Driver#连接池的配置信息## 初始化大小，最小，最大spring.druid.initialSize=5spring.druid.minIdle=5spring.druid.maxActive=20## 配置获取连接等待超时的时间spring.druid.maxWait=60000# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒spring.druid.timeBetweenEvictionRunsMillis=60000# 配置一个连接在池中最小生存的时间，单位是毫秒spring.druid.minEvictableIdleTimeMillis=300000spring.druid.validationQuery=SELECT 1 FROM DUALspring.druid.testWhileIdle=truespring.druid.testOnBorrow=falsespring.druid.testOnReturn=falsespring.druid.poolPreparedStatements=truespring.druid.maxPoolPreparedStatementPerConnectionSize=20# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙spring.druid.filters=stat,wall,log4j# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=50007.实体类package com.niugang.entity;public class User { private int id; private String name; private Integer age; private String phone; private String password;
public String getPassword() { return password; }
public void setPassword(String password) { this.password = password; }
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public Integer getAge() { return age; }
public void setAge(Integer age) { this.age = age; }
public String getPhone() { return phone; }
public void setPhone(String phone) { this.phone = phone; }}8.JdbcTemplate查询转换类package com.niugang.entity;
import java.sql.ResultSet;import java.sql.SQLException;import org.springframework.jdbc.core.RowMapper;public class UserMapper implements RowMapper<User>{ public User mapRow(ResultSet rs, int rowNum) throws SQLException { User user = new User(); user.setId(rs.getInt("id")); user.setName(rs.getString("name")); user.setAge(rs.getInt("age")); user.setPhone(rs.getString("phone")); user.setPassword(rs.getString("password")); return user; }}9.dao层package com.niugang.dao;import java.util.List;import javax.annotation.Resource;import org.springframework.jdbc.core.JdbcTemplate;import org.springframework.stereotype.Repository;import com.niugang.entity.User;import com.niugang.entity.UserMapper;
@Repositorypublic class UserDao {
@Resource private JdbcTemplate jdbcTemplate; public List<User> queryList() { return jdbcTemplate.query("select * from user",new UserMapper()); } public void save(User user){ jdbcTemplate.update("insert into user (name,password,age,phone) values(?,?,?,?)",new Object[]{user.getName(),user.getPassword(),user.getAge(),user.getPhone()}); } public User get(int id) { List<User> list=jdbcTemplate.query("select * from user where id=?",new Object[]{id},new UserMapper()); if(list!=null&&list.size()>0){ return list.get(0); } return null; } public void delete(int id) { jdbcTemplate.execute("delete from user where id ="+id); }
}10.service层package com.niugang.service;import java.util.List;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.niugang.dao.UserDao;import com.niugang.entity.User;@Servicepublic class UserService { @Resource private UserDao userDao; public List<User> queryList(){ return userDao.queryList(); } public void save(User user){ userDao.save(user); } public User get(int id){ return userDao.get(id); } public void delete(int id){ userDao.delete(id);; }}11.controller层package com.niugang.controller;import java.util.List;import javax.annotation.Resource;import org.apache.commons.lang3.StringUtils;import org.springframework.stereotype.Controller;import org.springframework.ui.ModelMap;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.niugang.entity.User;import com.niugang.service.UserService;@Controllerpublic class IndexController { @Resource private UserService userService; /** * 跳转到登录页面 * * @param map * @return */ @RequestMapping(value = "/login", method = RequestMethod.GET) public String toLogin(ModelMap map) { return "login"; }
/** * 登录信息校验 * * @param map * @return */ @RequestMapping(value = "/login", method = RequestMethod.POST) public String login(ModelMap map, String name,String password) {
if (StringUtils.isNotBlank(name)&& !name.equals("admin") && StringUtils.isNotBlank(password) && !password.equals("123456")) { map.put("errorMessage", "用户名或密码错误"); return "login"; }
return "redirect:index"; }/** * 跳转到index页面 * * @return */ @RequestMapping(value = "/index") public String index(ModelMap map) { List<User> list = userService.queryList(); map.put("users", list); return "index"; } /** * 详情页面 * @param id * @param map * @return */ @RequestMapping(value = "/detail/{id}") public String detail(@PathVariable(value="id") Integer id,ModelMap map){ User user = userService.get(id); map.put("user", user); return "detail"; } /** * 删除 * @param id * @return */ @RequestMapping(value = "/delete/{id}") public String delete(@PathVariable(value="id") Integer id){ userService.delete(id); return "redirect:/index"; }/** * 跳转到添加页面 * @param map * @return */ @RequestMapping(value = "/save",method = RequestMethod.GET) public String toSave(ModelMap map) { return "add"; } /** * 保存添加信息 * @param user * @return */ @RequestMapping(value = "/save",method = RequestMethod.POST) public String save(User user,ModelMap map){ if(StringUtils.isBlank(user.getName())){ map.put("error", "用户名不能为空"); return "add"; } if(user.getAge()==null){ map.put("error", "非法年龄"); return "add"; } if(StringUtils.isBlank(user.getPhone())){ map.put("error", "手机号不能为空"); return "add"; } user.setPassword("123456"); userService.save(user); return "redirect:/index"; }}12.login.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h2>spring boot</h2>
<#if errorMessage??>
${errorMessage}
</#if>
<form action="login" method='post'>
用户名:<input type="text" name="name"><p>
密码:<input type="password" name="password"><p>
<input type="submit" value="提交">
</form>
<h6>用户名admin密码123456</h6>
</body>
</html>

13.index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
table {
border-collapse: collapse;
margin: 0 auto;
}
table, td, th {
border: 1px solid black;
padding: 15px;
}
</style>

</head>
<body>
<input type="button" value="添加" onclick="add();">
<table>
<thead>
<tr>
<th>用户名</th>
<th>年龄</th>
<th>电话</th>
<th>操作</th>
</tr>

</thead>
<tbody>
<#if users??> <#list users as user>
<tr>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.phone}</td>
<td><a href="javascript:void(0)" onclick="edit('${user.id}')" >编辑</a>
<a href="javascript:void(0)" onclick="del('${user.id}')">删除</a>
<a href="javascript:void(0)" onclick="detail('${user.id}')">详情</a>
</td>
</tr>
</#list> </#if>
</tbody>
</table>
<script type="text/javascript">
function edit(id){
alert(id);
}
function del(id){
var flag=confirm("你确定要删除此选项吗");
if(flag==true){
window.location.href="delete/"+id;
}
}
function detail(id){
window.location.href="detail/"+id;
}
function add(){
window.location.href="save";
}

</script>
</body>
</html>

14.detail.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<h2>详情页面</h2>
用户名：<input type="text" readonly value="${user.name!''}">
年龄：<input type="text" readonly value="${user.age!''}">
电话：<input type="text" readonly value="${user.phone!''}">
</body>
</html>

15.add.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<h2>添加</h2>
<#if error??>
${error}
</#if>
<form action="save" method='post'>
用户名:<input type="text" name="name"><p>
年龄:<input type="text" name="age"><p>
手机号:<input type="text" name="phone"><p>
<input type="submit" value="提交">
</form>
</body>

</html>
16.启动项目
输入如下地址： http://localhost:8080/myweb/login

成功后跳转页面：

详情页面：

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