一、开发环境：
1、windows 7 企业版
2、idea 14
3、jdk 1.8
4、maven 3.5.2
5、mariadb
6、sqlyog
二、maven设置：
maven目录下的conf目录下的settings.xml做如下内容的添加：
1、使用阿里云的仓库，比官网访问速度快很多
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<mirror> <id>nexus-aliyun</id> <mirrorof>central</mirrorof> <name>nexus aliyun</name><url>http://maven.aliyun.com/nexus/content/groups/public</url></mirror> |
2、全局jdk配置
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<!-- 全局jdk配置，settings.xml --> <profile> <id>jdk18</id> <activation> <activebydefault>true</activebydefault> <jdk>1.8</jdk> </activation> <properties> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <maven.compiler.compilerversion>1.8</maven.compiler.compilerversion> </properties> </profile> |
三、idea基本设置：
1、maven设置：选择maven目录，同时配置文件和本地仓库
2、字符编码设置
四、使用idea创建maven工程：
选择enable auto-import，创建好的工程目录如下图：
五、体验springboot结合jpa的快速开发吧
1、pom.xml
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<?xml version="1.0" encoding="utf-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>4.0.0</modelversion> <groupid>cn.temptation</groupid> <artifactid>studyspringboot</artifactid> <version>1.0-snapshot</version> <!-- 使用spring boot的默认设置 --> <parent> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</artifactid> <version>2.0.0.release</version> </parent> <dependencies> <!-- web --> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-web</artifactid> </dependency> <!-- thymeleaf --> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-thymeleaf</artifactid> </dependency> <!-- mysql--> <dependency> <groupid>mysql</groupid> <artifactid>mysql-connector-java</artifactid> <version>5.1.21</version> </dependency> <!-- jpa--> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-data-jpa</artifactid> </dependency> </dependencies></project> |
2、resources目录下新建application.properties（当然喜欢用yaml的可以用yaml）
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# 数据库连接spring.datasource.url=jdbc:mysql://127.0.0.1:3306/testspring.datasource.username=rootspring.datasource.password=saspring.datasource.driver-class-name=com.mysql.jdbc.driver# jpa配置spring.jpa.properties.hibernate.hbm2ddl.auto=update |
3、创建springboot程序启动类springbootapplication.java
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package cn.temptation;import org.springframework.boot.springapplication;import org.springframework.boot.autoconfigure.springbootapplication;@springbootapplicationpublic class springbootapplication { public static void main(string[] args) { // springboot项目启动 springapplication.run(springbootapplication.class, args); }} |
4、创建实体类category.java
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package cn.temptation.model;import javax.persistence.*;// 建库建表//drop table category;////create table category//(// categoryid int auto_increment primary key,// categoryname varchar(10) not null//);////insert into category values(null, '手机'), (null, '图书'), (null, '服装'), (null, '鞋帽');////select * from category;@entity@table(name = "category")public class category { @id @generatedvalue(strategy = generationtype.identity) @column(name = "categoryid") private integer categoryid; @column(name = "categoryname") private string categoryname; public integer getcategoryid() { return categoryid; } public void setcategoryid(integer categoryid) { this.categoryid = categoryid; } public string getcategoryname() { return categoryname; } public void setcategoryname(string categoryname) { this.categoryname = categoryname; }} |
5、创建dao接口categorydao.java
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package cn.temptation.dao;import cn.temptation.model.category;import org.springframework.data.jpa.repository.jparepository;public interface categorydao extends jparepository<category, integer> {} |
6、创建控制器类categorycontroller.java
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package cn.temptation.web;import cn.temptation.dao.categorydao;import cn.temptation.model.category;import org.springframework.beans.factory.annotation.autowired;import org.springframework.data.domain.page;import org.springframework.data.domain.pagerequest;import org.springframework.data.domain.pageable;import org.springframework.data.domain.sort;import org.springframework.stereotype.controller;import org.springframework.web.bind.annotation.requestmapping;import org.springframework.web.bind.annotation.requestparam;import org.springframework.web.servlet.modelandview;import java.util.list;@controllerpublic class categorycontroller { @autowired private categorydao categorydao; /** * 不分页查询 * * @return */// @requestmapping("/categorylist")// public modelandview categorylist() {// list<category> list = categorydao.findall();//// modelandview mav = new modelandview("categorylist");// mav.addobject("list", list);// return mav;// } /** * 分页查询 * * @return */ @requestmapping("/categorylist") public modelandview categorylist(@requestparam(value = "start", defaultvalue = "0") integer start, @requestparam(value = "limit", defaultvalue = "2") integer limit) { start = start < 0 ? 0 : start; sort sort = new sort(sort.default_direction, "categoryid"); pageable pageable = new pagerequest(start, limit, sort); page<category> page = categorydao.findall(pageable);// system.out.println(page.getnumber());// system.out.println(page.getnumberofelements());// system.out.println(page.getsize());// system.out.println(page.gettotalelements());// system.out.println(page.gettotalpages());// system.out.println(page.isfirst());// system.out.println(page.islast()); modelandview mav = new modelandview("categorylist"); mav.addobject("page", page); return mav; } /** * 类别新增视图 * @return */ @requestmapping("/categoryinit") public string categoryinit() { return "categoryinit"; } /** * 类别新增操作 * @param model * @return */ @requestmapping("/categoryinsert") public string categoryinsert(category model) { categorydao.save(model); return "redirect:categorylist"; } /** * 类别删除操作 * @param categoryid * @return */ @requestmapping("/categorydelete") public string categorydelete(integer categoryid) { categorydao.deletebyid(categoryid); return "redirect:categorylist"; } /** * 类别编辑视图 * @param categoryid * @return */ @requestmapping("/categoryedit") public modelandview categoryedit(integer categoryid) { category model = categorydao.getone(categoryid); modelandview mav = new modelandview("categoryedit"); mav.addobject("category", model); return mav; } /** * 类别编辑操作 * @param model * @return */ @requestmapping("/categoryupdate") public string categoryupdate(category model) { categorydao.save(model); return "redirect:categorylist"; }} |
7、resources目录下新建templates目录，创建表现层：类别列表页面（categorylist.html）、类别新增页面（categoryinit.html）、类别编辑页面（categoryedit.html）
类别列表页面（categorylist.html）
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<!doctype html><html lang="en"><head> <meta charset="utf-8"> <title>类别列表</title> <style> table, th, td { border: 1px solid green; border-collapse: collapse; } </style></head><body><a th:href="@{/categoryinit}">新增</a><table> <tr> <th>类别编号</th> <th>类别名称</th> <th>操 作</th> </tr> <!--不分页遍历--> <!--<tr th:each="item : ${list}">--> <!--分页遍历--> <tr th:each="item : ${page.content}"> <td th:text="${item.categoryid}">类别编号</td> <td th:text="${item.categoryname}">类别名称</td> <td> <a th:href="@{/categoryedit(categoryid=${item.categoryid})}">编辑</a> <a th:href="@{/categorydelete(categoryid=${item.categoryid})}">删除</a> </td> </tr></table><div> <a th:href="@{/categorylist(start=0)}">[首页]</a> <a th:if="${not page.isfirst()}" th:href="@{/categorylist(start=${page.number-1})}">[上页]</a> <a th:if="${not page.islast()}" th:href="@{/categorylist(start=${page.number+1})}">[下页]</a> <a th:href="@{/categorylist(start=${page.totalpages-1})}">[末页]</a></div></body></html> |
类别新增页面（categoryinit.html）
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<!doctype html><html lang="en"><head> <meta charset="utf-8"> <title>类别新增</title></head><body><form action="categoryinsert" method="post"> <label for="txtcategoryname">类别名称：</label> <input type="text" id="txtcategoryname" name="categoryname" /><br/> <input type="submit" value="提交"></form></body></html> |
类别编辑页面（categoryedit.html）
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<!doctype html><html lang="en"><head> <meta charset="utf-8"> <title>类别编辑</title></head><body><form action="categoryupdate" method="post"> <input type="hidden" id="txtcategoryid" name="categoryid" th:field="${category.categoryid}"/><br/> <label for="txtcategoryname">类别名称：</label> <input type="text" id="txtcategoryname" name="categoryname" th:field="${category.categoryname}"/><br/> <input type="submit" value="提交"></form></body></html> |
六、启动项目，运行效果如下
总结
以上所述是小编给大家介绍的idea+maven+springboot+jpa+thymeleaf实现crud及分页，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：https://www.cnblogs.com/iflytek/p/8526182.html
