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创建一个maven工程。配置Tomcat，并测试是否正常访问HelloWorld.
这一步就省略了。
在pom.xml导入依赖，以下依赖是ssm常用的一些依赖，都导进去，没有坏处。
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<jackson.version>2.9.0</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- aop联盟，提供了aop规范，Spring AOP就是实现了这个规范 -->
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- aspectj，实现了aop规范，比spring AOP实现的使用起来简单，所以引入它 -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.8.0</version>
</dependency>
<!-- 集成aspectjweaver -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!--spring集成测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- mybatis -->
<!-- mysql数据库驱动，以及使用的数据源 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- mybatis依赖，spring对jdbc的支持，spring集成mybatis以及对事务的支持 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
</dependency>
<!-- JSONObject的依赖 -->
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.7.0</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>net.sf.ezmorph</groupId>
<artifactId>ezmorph</artifactId>
<version>1.0.3</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.6</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2-rev-1</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-spec</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</build>创建数据表。
创建一个名称为category_的数据表，只有两个字段，一个id, 一个name，id自增。随便插入点数据。
DROP TABLE IF EXISTS `category_`;
CREATE TABLE `category_` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records
-- ----------------------------
INSERT INTO `category_` VALUES ('1', 'sadf');
INSERT INTO `category_` VALUES ('2', 'safa');
INSERT INTO `category_` VALUES ('3', 'adfasdfas');
INSERT INTO `category_` VALUES ('4', '张阿道夫');
INSERT INTO `category_` VALUES ('5', '违法收费');
INSERT INTO `category_` VALUES ('6', '发生的v');
INSERT INTO `category_` VALUES ('7', 'sdfsd');
INSERT INTO `category_` VALUES ('8', '34535');
编写实体类；DAO层；Service层；Controller层。
像我这样，在java文件夹目录下，创建这几个包。
然后在包下创建对应的java文件或配置文件，最终的项目结构是这样的：
（那些打马赛克的东西你们用不到，小孩子别看那些。）
接下来开始写实体类：
实体类名称最好见名知意，跟数据表名称要对上。因为使用了lombok插件，所以使用@Data注解，减少代码量。
Category.java
package com.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Category {
private int id;
private String name;
}然后是DAO层，这里写的多是接口，只写方法，不实现。
CategoryDao.java
package com.dao;
import com.entity.Category;
import java.util.List;
public interface CategoryDao {
public int add(Category category);
public void delete(int id);
public Category get(int id);
public int update(Category category);
public List<Category> list();
}然后在DAO层下创建对应的Mapper.xml文件。
注意namespace要对上，还有id对应上方法名。
CategoryMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.CategoryDao">
<insert id="add" parameterType="Category" >
insert into category_ ( name ) values (#{name})
</insert>
<delete id="delete" parameterType="Category" >
delete from category_ where id= #{id}
</delete>
<select id="get" parameterType="_int" resultType="Category">
select * from category_ where id= #{id}
</select>
<update id="update" parameterType="Category" >
update category_ set name=#{name} where id=#{id}
</update>
<select id="list" resultType="Category">
select * from category_
</select>
</mapper>然后是Service层，这里才是你要实现业务的地方。这里也是接口，在impl实现类里才是写真正实现的。
这里只实现一个：查询所有数据。
CategoryService.java
package com.service;
import com.entity.Category;
import java.util.List;
public interface CategoryService {
List<Category> list();
}然后写实现类。
CategoryServiceImpl.java
package com.service.impl;
import com.dao.CategoryDao;
import com.entity.Category;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.service.CategoryService;
import java.util.List;
@Service
public class CategoryServiceImpl implements CategoryService {
@Autowired
CategoryDao categoryDao;
@Override
public List<Category> list() {
return categoryDao.list();
}
}然后写Controller层。
IndexController.java
package com.controller;
import com.entity.Category;
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 org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import com.service.CategoryService;
import java.util.ArrayList;
import java.util.List;
@Controller
@RequestMapping("/")
public class IndexController {
@Autowired
CategoryService categoryService;
@RequestMapping("listCategory")
public ModelAndView listCategory(){
ModelAndView mav = new ModelAndView();
List<Category> cs= categoryService.list();
// 放入转发参数
mav.addObject("cs", cs);
// 放入jsp路径
mav.setViewName("listCategory");
return mav;
}
}OK,写到这里，你已经成功一半啦！给自己鼓鼓掌！
接下来，我们一鼓作气，写好配置文件并访问数据吧！
编写配置文件。
在resources目录下，创建两个配置文件。
注意把数据库，密码，改成自己的，
applicationContext.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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:annotation-config />
<context:component-scan base-package="com.service" />
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/ssm?characterEncoding=UTF-8</value>
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value>root</value>
</property>
</bean>
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="typeAliasesPackage" value="com.entity" />
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:com/dao/*.xml"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.dao"/>
</bean>
</beans>springMVC.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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.controller">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
</mvc:message-converters>
</mvc:annotation-driven>
<mvc:default-servlet-handler />
<!-- 视图定位 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>最后就是web.xml了。
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<!-- spring的配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- spring mvc核心：分发servlet -->
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- spring mvc的配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMVC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>创建listCategory.jsp文件。
在WEB-INF目录下创建jsp文件夹，将jsp文件都放在这里，因为我们在springMVC.xml中配置过的，就不过多解释了。
不知道在哪创建的可以回头看一下我的那个项目路径，根据那个来即可
listCategory.jsp
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2021/5/12
Time: 12:46
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java"
pageEncoding="UTF-8" import="java.util.*"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<head>
<title>Title</title>
</head>
<body>
<table align='center' border='1' cellspacing='0'>
<tr>
<td>id</td>
<td>name</td>
</tr>
<c:forEach items="${cs}" var="c" varStatus="st">
<tr>
<td>${c.id}</td>
<td>${c.name}</td>
</tr>
</c:forEach>
</table>
</body>
</html>这里得到数据的思路我就不多说了吧，懂得都懂。就是jsp页面中通过jstl标签来获取到Controller中返回的数据。
OK,到这里，大功告成！启动Tomcat,测试一下。
没问题吧，注意这里的访问路径，http://localhost:8885/listCategory ，不是直接访问jsp页面，是访问controller中的请求路径。
ok,就到这吧，
这里有一个小小的改进，就是controller的改变，使用@ResponseBody注解来返回数据，然后前端通过ajax来异步请求数据。
ListController.java
package com.controller;
import com.entity.Category;
import com.service.CategoryService;
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 org.springframework.web.bind.annotation.RestController;
import java.util.List;
@Controller
@RequestMapping("/")
public class ListController {
@Autowired
CategoryService categoryService;
@RequestMapping("list/allCategory")
@ResponseBody
public List<Category> findAll(){
List<Category> list = categoryService.list();
System.out.println(list.size());
return list;
}
@RequestMapping("/listall")
public String listAll(){
return "listall";
}
}在jsp文件夹下创建listall.jsp页面。
listall.jsp
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2021/5/14
Time: 10:05
To change this template use File | Settings | File Templates.
--%>
<%@ page isELIgnored="false"%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="f" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>首页</title>
</head>
<body>
<input type="button" id="btn" value="获取数据"/>
<table width="80%" align="center">
<tr>
<td>id</td>
<td>姓名</td>
</tr>
<tbody id="content">
</tbody>
</table>
<script src="https://atts.yisu.com/attachments/jquery.min.js">
</script>
<script type="text/javascript">
$(function () {
$('#btn').click(function () {
$.post("list/allCategory",function (data) {
console.log(data);
var html = "";
for(var i = 0; i <data.length;i++){
html += "<tr>" +
"<td>"+ data[i].id+"</td>"+
"<td>"+ data[i].name+"</td>"+
+"</tr>";
}
$('#content').html(html);
})
})
})
</script>
</body>
</html>然后访问测试listall页面：
先访问list/allCategory请求路径，看看数据是否正常回显。
然后访问listall, 点击一下获取数据，OK,没问题吧，老铁们。
以上就是关于“怎么使用IDEA整合SSM框架并实现在网页上显示数据”这篇文章的内容，相信大家都有了一定的了解，希望小编分享的内容对大家有帮助，若想了解更多相关的知识内容，请关注亿速云行业资讯频道。
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