最新的spring boot技术实现登录、列表、分页、上传等功能

转载简书的一篇文章

效果图

<?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>com.moxi</groupId>
<artifactId>moxi</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>moxi</name>
<description>mox</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>

<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.2.0</version>
</dependency>

<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>

<!--thymeleaf  -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

<!--commons-io  -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>

</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

项目配置文件application.properties

#DataBase start
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/moxi?useUnicode=true&characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=Shu1shu2
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#DataBase end

#thymeleaf start
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.content-type=text/html
#开发时关闭缓存,不然没法看到实时页面
spring.thymeleaf.cache=false
#thymeleaf end

#uploadFileSize start
spring.http.multipart.maxFileSize=10Mb
spring.http.multipart.maxRequestSize=100Mb
#uploadFileSize end

项目分层
Controller层，追求极简，分页自己进行了一个简单封装
package com.moxi.controller;

import java.io.File;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

import com.moxi.model.NewsCategory;
import com.moxi.service.NewsCategoryService;
import com.moxi.util.PageUtil;

@Controller
@RequestMapping("/admin")
public class NewsController {

@Autowired
private NewsCategoryService newsCategoryService;

@RequestMapping("/newsManage_{pageCurrent}_{pageSize}_{pageCount}")
public String newsManage(@PathVariable Integer pageCurrent,@PathVariable Integer pageSize,@PathVariable Integer pageCount, Model model) {
return "/news/newsManage";
}

/**
* 文章分类列表
* @param newsCategory
* @param pageCurrent
* @param pageSize
* @param pageCount
* @param model
* @return
*/
@RequestMapping("/newsCategoryManage_{pageCurrent}_{pageSize}_{pageCount}")
public String newsCategoryManage(NewsCategory newsCategory,@PathVariable Integer pageCurrent,@PathVariable Integer pageSize,@PathVariable Integer pageCount, Model model) {
//判断
if(pageSize == 0) pageSize = 10;
if(pageCurrent == 0) pageCurrent = 1;
int rows = newsCategoryService.count(newsCategory);
if(pageCount == 0) pageCount = rows%pageSize == 0 ? (rows/pageSize) : (rows/pageSize) + 1;

//查询
newsCategory.setStart((pageCurrent - 1)*pageSize);
newsCategory.setEnd(pageSize);
List<NewsCategory> list = newsCategoryService.list(newsCategory);

//输出
model.addAttribute("list", list);
String pageHTML = PageUtil.getPageContent("newsCategoryManage_{pageCurrent}_{pageSize}_{pageCount}?name="+newsCategory.getName(), pageCurrent, pageSize, pageCount);
model.addAttribute("pageHTML",pageHTML);
model.addAttribute("newsCategory",newsCategory);
return "/news/newsCategoryManage";
}

/**
* 文章分类新增、修改跳转
* @param model
* @param newsCategory
* @return
*/
@GetMapping("newsCategoryEdit")
public String newsCategoryEditGet(Model model,NewsCategory newsCategory) {
if(newsCategory.getId()!=0){
NewsCategory newsCategoryT = newsCategoryService.findById(newsCategory);
model.addAttribute("newsCategory",newsCategoryT);
}
return "/news/newsCategoryEdit";
}

/**
* 文章分类新增、修改提交
* @param model
* @param newsCategory
* @param imageFile
* @param httpSession
* @return
*/
@PostMapping("newsCategoryEdit")
public String newsCategoryEditPost(Model model,NewsCategory newsCategory, @RequestParam MultipartFile[] imageFile,HttpSession httpSession) {
for (MultipartFile file : imageFile) {
if (file.isEmpty()) {
System.out.println("文件未上传");
} else {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
Date date = new java.util.Date();
String strDate = sdf.format(date);
String fileName = strDate + file.getOriginalFilename().substring(
file.getOriginalFilename().indexOf("."),
file.getOriginalFilename().length());
String realPath = httpSession.getServletContext().getRealPath("/userfiles");
System.out.println("realPath : "+realPath);
try {
FileUtils.copyInputStreamToFile(file.getInputStream(),new File(realPath, fileName));
newsCategory.setImage("/userfiles/"+fileName);
} catch (IOException e) {
e.printStackTrace();
}
}
}
if(newsCategory.getId()!=0){
newsCategoryService.update(newsCategory);
} else {
newsCategoryService.insert(newsCategory);
}
return "redirect:newsCategoryManage_0_0_0";
}

}

Model层（pure类）

package com.moxi.model;

import java.sql.Date;

public class NewsCategory extends BaseObject

private long id;
private String name;
private String description;
private String image;
private Date addDate;
private int state;

public long getId() {
return id;
}

public void setId(long id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public String getImage() {
return image;
}

public void setImage(String image) {
this.image = image;
}

public Date getAddDate() {
return addDate;
}

public void setAddDate(Date addDate) {
this.addDate = addDate;
}

public int getState() {
return state;
}

public void setState(int state) {
this.state = state;
}

}

Service层，一切追求极简，所以这里Mybatis用得是注解，我觉得注解也挺好用的。

package com.moxi.service;

import java.util.List;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import com.moxi.model.NewsCategory;

@Mapper
public interface NewsCategoryService {

@Select("SELECT * FROM `moxi`.`news_category` where id = #{id};")
NewsCategory findById(NewsCategory newsCategory);

@Select({
"<script>",
"SELECT * FROM `moxi`.`news_category`",
"WHERE state = 0",
"<when test='name!=null'>",
"AND name LIKE CONCAT('%',#{name},'%')",
"</when>",
"order by addDate desc limit #{start},#{end}",
"</script>"
})
List<NewsCategory> list(NewsCategory newsCategory);

@Select({
"<script>",
"SELECT count(*) FROM `moxi`.`news_category`",
"WHERE state = 0",
"<when test='name!=null'>",
"AND name LIKE CONCAT('%',#{name},'%')",
"</when>",
"</script>"
})
int count(NewsCategory newsCategory);

@Insert("INSERT INTO `moxi`.`news_category` (`id`, `name`, `description`, `image`, `addDate`, `state`) VALUES (null, #{name}, #{description}, #{image}, now(), 0);")
int insert(NewsCategory newsCategory);

@Update("UPDATE `moxi`.`news_category`SET `name` = #{name}, `description` = #{description}, `image` = #{image}, `state` = #{state} WHERE `id` = #{id};")
int update(NewsCategory newsCategory);

}

View层，使用的thymeleaf的标签，挺好用的，本来打算全站用ajax，不过开发效率稍微慢了些。
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">

<head>

<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />

<title>MOXI</title>

<link th:href="@{/css/bootstrap.min.css}" rel="stylesheet" />
<link th:href="@{/font-awesome/css/font-awesome.css}" rel="stylesheet" />
<link th:href="@{/css/style.css}" rel="stylesheet" />

<link th:href="@{/css/plugins/iCheck/custom.css}" rel="stylesheet"/>
<link th:href="@{/css/plugins/footable/footable.core.css}" rel="stylesheet"/>

</head>

<body>

<div id="wrapper">
<nav class="navbar-default navbar-static-side" role="navigation" th:include="nav :: navigation"></nav>
<div id="page-wrapper" class="gray-bg">
<div class="border-bottom" th:include="header :: headerTop"></div>
<div class="row wrapper border-bottom white-bg page-heading" th:fragment="headerNav">
<div class="col-lg-10">
<h2>文章分类</h2>
<ol class="breadcrumb">
<li>
<a href="#">首页</a>
</li>
<li>
<a>内容管理</a>
</li>
<li class="active">
<strong>文章分类</strong>
</li>
</ol>
</div>
<div class="col-lg-2">
</div>
</div>
<div class="wrapper wrapper-content animated fadeInRight">
<div class="row">
<div class="col-lg-12">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h5>搜索</h5>
<div class="ibox-tools">
<a class="collapse-link">
<i class="fa fa-chevron-up"></i>
</a>
</div>
</div>
<div class="ibox-content" style="display: block;">
<form action="newsCategoryManage_0_0_0">
<div class="row">
<div class="col-sm-3 m-b-xs">
<input name="name" value="" th:value="${newsCategory.name}" placeholder="分类名称" class="form-control" type="text"/>
</div>
<div class="col-sm-1 m-b-xs">
<button id="submitButton" class="btn btn-primary btn-block" type="submit"><i class="fa fa-search"></i>    <strong>搜索</strong></button>
</div>

1aa70
</div>
</form>
<div class="row">
<div class="col-sm-6 m-b-xs">
<a th:href="@{newsCategoryEdit}" class="btn btn-white btn-sm" data-toggle="tooltip" data-placement="left" title="" data-original-title="Refresh inbox"><i class="fa fa-plus"></i>    新增分类    </a>
</div>
<div class="col-sm-6 m-b-xs"></div>
</div>
</div>
</div>
</div>
<div class="col-lg-12">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h5>文章列表</h5>
<div class="ibox-tools">
<a class="collapse-link">
<i class="fa fa-chevron-up"></i>
</a>
</div>
</div>
<div class="ibox-content">

<div class="table-responsive">
<table class=" table table-hover" data-page-size="10">
<thead>
<tr>
<th width="5%">ID</th>
<th width="30%">名称 </th>
<th width="40%">描述 </th>
<th width="10%">添加时间</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr th:each="nc : ${list}">
<td th:text="${nc.id}">Onions</td>
<td th:text="${nc.name}">Onions</td>
<td th:text="${nc.description}">Onions</td>
<td th:text="${nc.addDate}">Onions</td>
<td>
<a th:href="@{'newsCategoryEdit?id='+${nc.id}}" title="修改"><i class="fa fa-edit text-navy"></i></a>

<a th:href="@{'newsCategoryEdit?id='+${nc.id}}" title="修改"><i class="fa fa-trash-o text-navy"></i></a>
</td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan="7">
<ul id="pageHTML" class="pagination pull-right"></ul>
</td>
</tr>
</tfoot>
</table>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="footer" th:include="footer :: copyright"></div>
</div>
</div>

<!-- Mainly scripts -->
<script th:src="@{/js/jquery-2.1.1.js}"></script>
<script th:src="@{/js/bootstrap.min.js}"></script>
<script th:src="@{/js/plugins/metisMenu/jquery.metisMenu.js}"></script>
<script th:src="@{/js/plugins/slimscroll/jquery.slimscroll.min.js}"></script>

<!-- Peity -->
<script th:src="@{/js/plugins/peity/jquery.peity.min.js}"></script>

<!-- Custom and plugin javascript -->
<script th:src="@{/js/inspinia.js}"></script>
<script th:src="@{/js/plugins/pace/pace.min.js}"></script>

<!-- iCheck -->
<script th:src="@{/js/plugins/iCheck/icheck.min.js}"></script>

<!-- Peity -->
<script th:src="@{/js/demo/peity-demo.js}"></script>

<!-- FooTable -->
<script th:src="@{/js/plugins/footable/footable.all.min.js}"></script>

<!-- common -->
<script th:src="@{/js/common.js}"></script>

<script th:inline="javascript">

var pageHTML = [[${pageHTML}]];
$(document).ready(function () {
$("#pageHTML").html(pageHTML);

});

</script>
</body>

</html>

分页封装，一切为了极简，做了个util类
package com.moxi.util;

public class PageUtil {

public static String getPageContent(String url,int pageCurrent,int pageSize,int pageCount){
if (pageCount == 0) {
return "";
}
String urlNew = url.replace("{pageSize}", pageSize+"").replace("{pageCount}", pageCount+"");

String first = urlNew.replace("{pageCurrent}", 1+"");
String prev = urlNew.replace("{pageCurrent}", (pageCurrent - 1)+"");
String next = urlNew.replace("{pageCurrent}", (pageCurrent + 1)+"");
String last = urlNew.replace("{pageCurrent}", pageCount+"");

StringBuffer html = new StringBuffer();
html.append("<li class=\"footable-page-arrow"+(pageCurrent<=1?" disabled":"")+"\"><a href=\""+(pageCurrent<=1?"#":first)+"\">«</a></li>");
html.append("<li class=\"footable-page-arrow"+(pageCurrent<=1?" disabled":"")+"\"><a href=\""+(pageCurrent<=1?"#":prev)+"\">‹</a></li>");
for(int i = 0 ;i < pageCount; i++){
String urlItem = urlNew.replace("{pageCurrent}", (i+1)+"");
html.append("<li class=\"footable-page"+(((i+1) == pageCurrent)?" active":"")+"\"><a href=\""+urlItem+"\">"+(i+1)+"</a></li>");
}
html.append("<li class=\"footable-page-arrow"+(pageCurrent==pageCount?" disabled":"")+"\"><a href=\""+(pageCurrent==pageCount?"#":next)+"\">›</a></li>");
html.append("<li class=\"footable-page-arrow"+(pageCurrent==pageCount?" disabled":"")+"\"><a href=\""+(pageCurrent==pageCount?"#":last)+"\">»</a></li>");

return html.toString().replaceAll("null", "");
}

}

作者：foreknow
链接：https://www.jianshu.com/p/871e70b3ad7c
來源：简书
简书著作权归作者所有，任何形式的转载都请联系作者获得授权并注明出处。