国产成人精品18p,天天干成人网,无码专区狠狠躁天天躁,美女脱精光隐私扒开免费观看

IDEA整合SSM框架實(shí)現網(wǎng)頁(yè)上顯示數據

發(fā)布時(shí)間:2021-07-05 18:40 來(lái)源:腳本之家 閱讀:0 作者:惡魔青葉 欄目: 開(kāi)發(fā)技術(shù)

我們來(lái)整合SSM框架

第一步、

創(chuàng )建一個(gè)maven工程。配置Tomcat,并測試是否正常訪(fǎng)問(wèn)HelloWorld.
這一步就省略了。
不懂得看這個(gè)博客:

創(chuàng )建出來(lái)是這樣的:

我們從這里開(kāi)始整合ssm。

第二步、

在pom.xml導入依賴(lài),以下依賴(lài)是ssm常用的一些依賴(lài),都導進(jìn)去,沒(méi)有壞處。

 <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聯(lián)盟,提供了aop規范,Spring AOP就是實(shí)現了這個(gè)規范 -->
    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <!-- aspectj,實(shí)現了aop規范,比spring AOP實(shí)現的使用起來(lái)簡(jiǎn)單,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集成測試  -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.1.3.RELEASE</version>
    </dependency>

    <!-- mybatis -->
    <!-- mysql數據驅動(dòng),以及使用的數據源 -->
    <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依賴(lài),spring對jdbc的支持,spring集成mybatis以及對事務(wù)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的依賴(lài) -->
    <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>

第三步、

創(chuàng )建數據表。
創(chuàng )建一個(gè)名稱(chēng)為category_的數據表,只有兩個(gè)字段,一個(gè)id, 一個(gè)name,id自增。隨便插入點(diǎn)數據。

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', '張阿道夫');
INSERT INTO `category_` VALUES ('5', '違法收費');
INSERT INTO `category_` VALUES ('6', '發(fā)生的v');
INSERT INTO `category_` VALUES ('7', 'sdfsd');
INSERT INTO `category_` VALUES ('8', '34535');

第四步、

編寫(xiě)實(shí)體類(lèi);DAO層;Service層;Controller層。

像我這樣,在java文件夾目錄下,創(chuàng )建這幾個(gè)包。

然后在包下創(chuàng )建對應的java文件或配置文件,最終的項目結構是這樣的:
(那些打馬賽克的東西你們用不到,小孩子別看那些。)

接下來(lái)開(kāi)始寫(xiě)實(shí)體類(lèi):

實(shí)體類(lèi)名稱(chēng)最好見(jiàn)名知意,跟數據表名稱(chēng)要對上。因為使用了lombok插件,所以使用@Data注解,減少代碼量。

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層,這里寫(xiě)的多是接口,只寫(xiě)方法,不實(shí)現。

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層下創(chuàng )建對應的Mapper.xml文件。
注意namespace要對上,還有id對應上方法名。

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層,這里才是你要實(shí)現業(yè)務(wù)的地方。這里也是接口,在impl實(shí)現類(lèi)里才是寫(xiě)真正實(shí)現的。
這里只實(shí)現一個(gè):查詢(xún)所有數據。

CategoryService.java

package com.service;

import com.entity.Category;

import java.util.List;

public interface CategoryService {
    List<Category> list();
}

然后寫(xiě)實(shí)現類(lèi)。

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();
    }
}

然后寫(xiě)Controller層。

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();
        // 放入轉發(fā)參數
        mav.addObject("cs", cs);
        // 放入jsp路徑
        mav.setViewName("listCategory");
        return mav;
    }
}

OK,寫(xiě)到這里,你已經(jīng)成功一半啦!給自己鼓鼓掌!
接下來(lái),我們一鼓作氣,寫(xiě)好配置文件并訪(fǎng)問(wèn)數據吧!

第五步、

編寫(xiě)配置文件。

在resources目錄下,創(chuàng )建兩個(gè)配置文件。

注意把數據庫,密碼,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 />

    <!-- 視圖定位 -->
    <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:分發(fā)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>

第六步、

創(chuàng )建listCategory.jsp文件。
在WEB-INF目錄下創(chuàng )建jsp文件夾,將jsp文件都放在這里,因為我們在springMVC.xml中配置過(guò)的,就不過(guò)多解釋了。

不知道在哪創(chuàng )建的可以回頭看一下我的那個(gè)項目路徑,根據那個(gè)來(lái)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>

這里得到數據的思路我就不多說(shuō)了吧,懂得都懂。就是jsp頁(yè)面中通過(guò)jstl標簽來(lái)獲取到Controller中返回的數據。

OK,到這里,大功告成!啟動(dòng)Tomcat,測試一下。

沒(méi)問(wèn)題吧,注意這里的訪(fǎng)問(wèn)路徑,http://localhost:8885/listCategory ,不是直接訪(fǎng)問(wèn)jsp頁(yè)面,是訪(fǎng)問(wèn)controller中的請求路徑。
ok,就到這吧,

這里有一個(gè)小小的改進(jìn),就是controller的改變,使用@ResponseBody注解來(lái)返回數據,然后前端通過(guò)ajax來(lái)異步請求數據。

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文件夾下創(chuàng )建listall.jsp頁(yè)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>首頁(yè)</title>
</head>
<body>

<input type="button" id="btn" value="獲取數據"/>
<table width="80%" align="center">
    <tr>
        <td>id</td>
        <td>姓名</td>

    </tr>
    <tbody id="content">
    </tbody>

</table>
<script src="https://cdn.staticfile.org/jquery/1.10.2/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>

然后訪(fǎng)問(wèn)測試listall頁(yè)面:

先訪(fǎng)問(wèn)list/allCategory請求路徑,看看數據是否正?;仫@。

然后訪(fǎng)問(wèn)listall, 點(diǎn)擊一下獲取數據,OK,沒(méi)問(wèn)題吧,老鐵們。

到此這篇關(guān)于IDEA整合SSM框架實(shí)現網(wǎng)頁(yè)上顯示數據的文章就介紹到這了,更多相關(guān)IDEA整合SSM內容請搜索腳本之家以前的文章或繼續瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!

免責聲明:本站發(fā)布的內容(圖片、視頻和文字)以原創(chuàng )、來(lái)自互聯(lián)網(wǎng)轉載和分享為主,文章觀(guān)點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權請聯(lián)系QQ:712375056 進(jìn)行舉報,并提供相關(guān)證據,一經(jīng)查實(shí),將立刻刪除涉嫌侵權內容。

色偷偷一区二区无码视频| 在教室被老师CAO到爽| 无码一区二区三区av免费| 四川丰满少妇被弄到高潮| 国产精品99久久精品爆乳| 日日摸处处碰夜夜爽|