集成SpringMVC&前端展示_springmvc ui-优快云博客

本文链接：https://blog.youkuaiyun.com/hello_patch/article/details/95399080

完成Service层

导包

 <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <org.springframework.version>4.2.5.RELEASE</org.springframework.version>
        <org.hibernate.version>4.3.8.Final</org.hibernate.version>
        <spring-data-jpa.version>1.9.0.RELEASE</spring-data-jpa.version>
        <com.fasterxml.jackson.version>2.5.0</com.fasterxml.jackson.version>
    </properties>
    <dependencies>
        <!-- Spring的支持包 -->
        <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-core</artifactId>
           <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.2.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${org.springframework.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- 引入web前端的支持 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <!-- SpringMCV上传需要用到io包-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>
        <!-- 文件上传用到的包 -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.2</version>
        </dependency>
        <!-- SpringMVC的json支持包 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${com.fasterxml.jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>${com.fasterxml.jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${com.fasterxml.jackson.version}</version>
        </dependency>
        <!-- hibernate的支持包 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${org.hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${org.hibernate.version}</version>
        </dependency>
        <!-- SpringData的支持包 -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>${spring-data-jpa.version}</version>
        </dependency>
        <!-- SpringData的擴展包 -->
        <dependency>
            <groupId>com.github.wenhao</groupId>
            <artifactId>jpa-spec</artifactId>
            <version>3.1.1</version>
            <!-- 把所有的依賴都去掉 -->
            <exclusions>
                <exclusion>
                    <groupId>*</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.2.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.5</version>
        </dependency>
        <!-- 測試包 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <!-- 这个scope 只能作用在编译和测试时，同时没有传递性。表示在运行的时候不添加此jar文件 -->
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

创建IBaseService

package cn.itsource.pss.service;

import cn.itsource.pss.domain.Employee;
import cn.itsource.pss.query.BaseQuery;
import org.springframework.data.domain.Page;
import java.io.Serializable;
import java.util.List;

public interface IBaseService<T,ID extends Serializable>{
    //添加与修改数据
    void save(T t);
    //根据id删除一条数据
    void delete(ID id);
    //根据id查询到一条数据
    T findOne(ID id);
    //查询所有数据
    List<T> findAll();
    //根据Query拿到分页对象(分页)
    Page findPageByQuery(BaseQuery baseQuery);
    //根据Query拿到对应的所有数据(不分页)
    List<T> findByQuery(BaseQuery baseQuery);
    //根据jpql与对应的参数拿到数据
    List findByJpql(String jpql,Object... values);
}

创建BaseServiceImpl

package cn.itsource.pss.service.impl;

import cn.itsource.pss.query.BaseQuery;
import cn.itsource.pss.repository.BaseRepository;
import cn.itsource.pss.service.IBaseService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.transaction.annotation.Transactional;

import java.io.Serializable;
import java.util.List;

import static org.springframework.transaction.annotation.Propagation.SUPPORTS;

@Transactional(readOnly = true,propagation = SUPPORTS)
public class BaseServiceImpl<T,ID  extends Serializable> implements IBaseService<T,ID>{

    //注意:Spring 4.x 中可以为子类注入子类对应的泛型类型的成员变量的引用
    @Autowired
    private BaseRepository<T,ID> baseRepository;

    @Override
    @Transactional(
    public void save(T t) {
        baseRepository.save(t);
    }

    @Override
    @Transactional(
    public void delete(ID id) {
        baseRepository.delete(id);
    }

    @Override
    public T findOne(ID id) {
        return baseRepository.findOne(id);
    }

    @Override
    public List<T> findAll() {
        return baseRepository.findAll();
    }

    @Override
    public Page findPageByQuery(BaseQuery baseQuery) {
        return baseRepository.findPageByQuery(baseQuery);
    }

    @Override
    public List<T> findByQuery(BaseQuery baseQuery) {
        return baseRepository.findByQuery(baseQuery);
    }

    @Override
    public List findByJpql(String jpql, Object... values) {
        return baseRepository.findByJpql(jpql, values);
    }
}

创建IEmployeeService

package cn.itsource.pss.service;

import cn.itsource.pss.domain.Employee;
//注：在开发中，业务后期是有很多功能的(不只是我们最简单的CRUD)
public interface IEmployeeService extends IBaseService<Employee,Long> {
}

建EmployeeServiceImpl

package cn.itsource.pss.service.impl;

import cn.itsource.pss.domain.Employee;
import cn.itsource.pss.service.IEmployeeService;
import org.springframework.stereotype.Service;

@Service
public class EmployeeServiceImpl extends BaseServiceImpl<Employee,Long> implements IEmployeeService {
}

集成SpringMVC

配置applicationContext-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc.xsd
    ">
    <!-- 对静态资源进行放行 -->
    <mvc:default-servlet-handler />
    <!-- 扫描controller部分的包 -->
    <!-- @Component组件, @Repository持久层, @Service业务逻辑层, and @Controller控制器 -->
    <context:component-scan base-package="cn.itsource.pss.web" />
    <!-- 添加mvc对@RequestMapping等注解的支持 -->
    <mvc:annotation-driven />

    <!-- ViewResolver 视图解析器 (struts2视图类型类似) -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 设置视图路径的前后缀，该配置可以让我们写视图路径的时候更简单。 -->
        <!-- 希望跳转jsp是[/WEB-INF/views/前缀][xxx变量][.jsp后缀] -->
        <!-- * @see #setPrefix -->
        <property name="prefix" value="/WEB-INF/views/" />
        <!-- * @see #setSuffix -->
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 错误：提示告诉开发者你没有配置文件上传解析器。 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 设置上传文件的最大尺寸为1MB -->
        <property name="maxUploadSize">
            <value>1048576</value>
        </property>
    </bean>
</beans>

配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         id="WebApp_ID" version="3.1">


</web-app>

创建Controller与页面


//EmployeeController
package cn.itsource.pss.controller;

import cn.itsource.pss.domain.Employee;
import cn.itsource.pss.service.IEmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

//import java.util.List;

@Controller
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private IEmployeeService employeeService;

    @RequestMapping("/index")
    public String index() {
        //根据配置，这里会跳到/WEB-INF/views/employee/employee.jsp页面
        return "employee/employee";
    }
    @RequestMapping("/list")
    @ResponseBody
    public List<Employee> list(){
        return employeeService.findAll();
    }

}


employee.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>访问成功</h1>
</body>
</html>

引入主页面

准备MainController.java文件
准备main.jsp文件

在这里插入图片描述

主页面的代码

抽取一个head.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<link rel="stylesheet" type="text/css" href="/easyui/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="/easyui/themes/icon.css">

<script type="text/javascript" src="/easyui/jquery.min.js"></script>
<script type="text/javascript" src="/easyui/jquery.easyui.min.js"></script>
<script type="text/javascript" src="/easyui/locale/easyui-lang-zh_CN.js"></script>
<script type="text/javascript" src="/easyui/plugin/jquery.jdirk.js"></script>
<script type="text/javascript" src="/js/common.js"></script>

准备静态菜单数据

[{
  "id":1,
  "text":"基本数据",
  "iconCls":"icon-save",
  "children":[{
    "text":"用户管理",
    "url":"/employee/index"
  },{
    "text":"部门管理",
    "url":"/department/index"
  }]
}]

//main.jsp中的代码如下
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>智销系统</title>
    <%@include file="/WEB-INF/views/head.jsp" %>

    <script type="text/javascript">
        $(function () {
            $('#menuTree').tree({
                url:'/json/menu.json',
                onClick:function(node) {
                    addTab(node.text,node.url);
                }
            });
        })


        function addTab(title, url){
            if(url){
                if ($('#dataTab').tabs('exists', title)){
                    $('#dataTab').tabs('select', title);
                } else {
                    var content = '<iframe scrolling="auto" frameborder="0"  src="'+url+'" style="width:100%;height:100%;"></iframe>';
                    $('#dataTab').tabs('add',{
                        title:title,
                        content:content,
                        closable:true
                    });
                }
            }
        }
    </script>
</head>
<body class="easyui-layout">
<div data-options="region:'north',split:true" style="height:100px;">
    <h1>源码时代智销系统</h1>
</div>
<div data-options="region:'west',title:'菜单',split:true" style="width:230px;">
    <ul id="menuTree"></ul>
</div>
<div id="dataTab" data-options="region:'center'"
     class="easyui-tabs" style="padding:5px;background:#eee;">
    <div title="Home">
    </div>
</div>
</body>
</html>

员工的查询页面

employee.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <%@include file="/WEB-INF/views/head.jsp" %>
    <script type="text/javascript" src="/js/model/employee.js"></script>
</head>
<body>
<table id="employeeGrid" class="easyui-datagrid" data-options="fit:true,fixed:true,fitColumns:true,toolbar:'#tb',singleSelect:true";
       url="/employee/page"
       iconCls="icon-save"
       rownumbers="true" pagination="true">
    <thead>
    <tr>
        <th width="20"  field="username" >用户名</th>
        <th width="20"  field="password">密码</th>
        <th width="20"  field="email">邮件</th>
        <th width="20"  field="age" align="right">年龄</th>
    </tr>
    </thead>
</table>

</body>
</html>

UiPage.java

由于咱们SpringDataJpa返回的数据和EasyUI中的数据匹配不上，所以咱们准备一个类，直接把SpringDataJpa的Page对象进行一次封装，返回给前台即可：

package cn.itsource.yxb.common;
import org.springframework.data.domain.Page;
import java.util.List;

public class UiPage {
    private long total; //总条数
    private List rows; //每页数据
    public UiPage(){}
    public UiPage(Page page){
        total = page.getTotalElements();
        rows = page.getContent();
    }
    get,set省略
}

BaseQuery.java

EasyUI查询传参的名称如果和BaseQuery中接收的名称不一致，咱们就需要修改BaseQuery这个类进行功能的兼容：

/**
 * 所有Query对象的父类 公共代码｜规范
 */
public abstract class BaseQuery {

    ….
    //兼容Easyui的分页
    public void setPage(int page) {
        this.currentPage = page;
    }
    public void setRows(int rows) {
        this.pageSize = rows;
    }
}

EmployeeController.java

在控制层页面返回相应的数据即可
@Controller
@RequestMapping("/employee")
public class EmployeeController extends BaseController{

    @Autowired
    private IEmployeeService employeeService;

    @RequestMapping("/index")
    public String index(){
        return "employee/employee";
    }

    //查询分页数据
    @RequestMapping("/page")
    @ResponseBody
    public UiPage page(EmployeeQuery query){
        return new UiPage(employeeService.findPageByQuery(query));
    }

}

完善Employee对象

加入部门模块

注：部门模块咱们只做到service部分就可以了！
创建部门Domain,然后把员工的代码都拷备一份修改即可(此处我们不做详细介绍)

员工完善字段

@Entity
@Table(name="employee")
public class Employee extends BaseDomain {

    private String username;
    private String password;
    private String email;
    private Integer age;

    //头像
    private String headImage;
    //部门
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name="department_id")
    private Department department;
	…
}

显示部门与头像


//.employee.js
function formatImage(data) {
    return "<img src='"+data+"' alt='没有图片' />"
}
function formatDept(data) {
    if(data){return data.name};
    return "";
}

$(function () {

})

//employee.jsp
<table id="employeeGrid" class="easyui-datagrid" data-options="fit:true,fixed:true,fitColumns:true,toolbar:'#tb',singleSelect:true";
       url="/employee/page"
       iconCls="icon-save"
       rownumbers="true" pagination="true">
    <thead>
    <tr>
        <th width="20"  field="headImage" data-options="formatter:formatImage">头像</th>
        <th width="20"  field="username" >用户名</th>
        <th width="20"  field="password">密码</th>
        <th width="20"  field="email">邮件</th>
        <th width="20"  field="age" align="right">年龄</th>
        <th width="20"  field="department" align="center" data-options="formatter:formatDept">部门</th>
    </tr>
    </thead>
</table>

//web.xml(解决noSession)
运行时我们会发现没有数据，然后通过js调试工作可以看到，返回报错 no-session
我们加上以下代码即可
<!-- 加上OpenEntityManager -->
<filter>
    <filter-name>openEntity</filter-name>
    <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>openEntity</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

加入高级查询条件

//employee.jsp
这里咱们之前employee的grid控件是引入了这个div的
<div id="tb" style="padding:5px;height:auto">
      <!-- 这部门是查询的功能 -->
    <div>
        <form id="searchForm" action="/employee/download" method="post">
            用户名： <input name="username" class="easyui-textbox" style="width:80px;height:32px">
            邮件: <input name="email" class="easyui-textbox" style="width:80px;height:32px">
            部门 :
            <input  class="easyui-combobox" name="departmentId"
                    data-options="valueField:'id',textField:'name',panelHeight:'auto',url:'/util/departmentList'">
            <a href="#" data-method="search"  class="easyui-linkbutton" iconCls="icon-search">查找</a>
        </form>
    </div>
</div>

//.UtilController
我们把很多工具功能都放到这个类中
/**
 * 工具的Controller
 */
@Controller
@RequestMapping("/util")
public class UtilController extends BaseController {

    @Autowired
    private IDepartmentService departmentService;
    @RequestMapping("/departmentList")
    @ResponseBody
    public List<Department> departmentList(){
        return departmentService.findAll();
    }

}

//employee.js
    咱们先可以引入jquery.serializejson.js这个控件，它直接直接拿到一个表单中的所有值，并且封装成一个json数据.
…
$(function () {
    //这里我们把很多会常用到的元素进行一个抽取
    var searchForm = $("#searchForm");
    var employeeGrid = $("#employeeGrid");

    //只要a标签中有data-method属性，咱们就给它添加事件
    //  执行对应的itsource中的事件
    $("a[data-method]").on("click",function () {
        itsource[$(this).data("method")]();
    })

    var itsource={
        search:function () {
            //需要先引入 jquery.jdirk.js 才可以使用这个方法
            var params = searchForm.serializeObject();
            employeeGrid.datagrid('load',params);
        }
    }
})

//EmployeeQuery
这里添加部门的支持
//只写一些特殊的条件
public class EmployeeQuery extends BaseQuery {

    …
private Long departmentId;

    @Override
    public Specification createSpecification() {
        Specification<Employee> spec = Specifications.<Employee>and()
                .like(StringUtils.isNotBlank(username),"username", "%"+username+"%")
                .like(StringUtils.isNotBlank(email),"email", "%"+email+"%")
                .eq(departmentId!=null,"department.id",departmentId)
                .lt(age!=null,"age", age )
                .build();
        return spec;
    }
…
}