eclipse+springmvc+mybatis+mysql搭建web工程
本人在使用eclipse+springMVC+mybatis+mysql搭建web工程时，总结了一些经验和方法，供大家学习交流。之所以采用这些工具和技术搭建工程，是因为它们的应用比较广泛且是开源的，有很多的资料可供参考，在较长的时间内不会被淘汰，废话少说直接上干货。
说明：eclipse中的maven工程和基础的数据库安装、环境搭建大家可在网上搜索，比较多，不再赘述。
1、工程目录结构
1）后台java文件
2）配置文件
3）前端jsp页面（如果创建工程中没有WEB-INF目录可在eclipse中配置生成；views是自己添加的）
2、具体文件内容及说明
1）UserController.java（控制层文件，主要负责客户端的请求拦截，调用业务层进行处理，并将处理结果返回到前端的jsp页面）
package com.bj58.stp.controller;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.bj58.stp.entity.User;
import com.bj58.stp.service.UserService;
//@Controller注解用于标示本类为web层控制组件
@Controller
//@RequestMapping("/user")用于标定访问时对url位置
@RequestMapping("/user")
//在默认情况下springmvc的实例都是单例模式,所以使用scope域将其注解为每次都创建一个新的实例
@Scope("prototype")
public class UserController{
@Autowired
UserService userService;
@RequestMapping("/login")
public String login(User user,HttpServletRequest request){
//调用login方法来验证是否是注册用户
boolean loginType = userService.login(user.getUsername(),user.getPassword());
if(loginType){
//如果验证通过,则将用户信息传到前台
request.setAttribute("user",user);
//并跳转到success.jsp页面
return "success";
}else{
//若不对,则将错误信息显示到错误页面
request.setAttribute("message","用户名密码错误");
return "fail";
}
}
}
2）IUserDao.java（持久层文件，主要封装了数据访问对象，便于对数据库进行访问操作）
package com.bj58.stp.dao;
import com.bj58.stp.entity.User;
public interface IUserDao {
public User selectById(int id);
public User selectByName(String username);
}
3）User（实体层文件，对应数据库中具体的表；变量对应表中的字段）
package com.bj58.stp.entity;
public class User {
private int id;
private String username;
private String password;
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password=password;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id=id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username=username;
}
}
4）UserServiceImpl.java（实现层文件，这是业务层负责业务逻辑的处理，实现的是UserService接口）
package com.bj58.stp.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.bj58.stp.dao.IUserDao;
import com.bj58.stp.entity.User;
import com.bj58.stp.service.UserService;
//@Service("UserService") 注解用于标示此类为业务层组件,在使用时会被注解的类会自动由
//spring进行注入,无需我们创建实例
@Service("UserService")
public class UserServiceImpl implements UserService{
//自动注入iuserdao 用于访问数据库
@Autowired
IUserDao Mapper;
//登录方法的实现,从jsp页面获取username与password
public boolean login(String username,String password) {
//对输入账号进行查询,取出数据库中保存对信息
User user=Mapper.selectByName(username);
if(user!=null) {
if(user.getUsername().equals(username)&&user.getPassword().equals(password))
return true;
}
return false;
}
}
5）UserService.xml（mybatis配置文件，映射面向对象和关系型数据库的关系）
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.bj58.stp.dao.IUserDao">
<select id="selectByName" parameterType="string" resultType="User">
select * from user where username=#{username}
select>
<select id="selectById" parameterType="int" resultType="User">
select * from user where id=#{id}
select>
mapper>
6）UserService（接口文件，定义业务操作具体实现在子类中）
package com.bj58.stp.service;
public interface UserService {
public boolean login(String username,String password);
}
7）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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
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-4.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.2.xsd">
<context:property-placeholder location="classpath:db.properties" />
<bean id="jdbcDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="jdbcDataSource" />
<property name="typeAliasesPackage" value="com.bj58.stp.entity">property>
<property name="mapperLocations"
value="classpath*:com/bj58/stp/mapper/*.xml">property>
bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property>
<property name="basePackage" value="com.bj58.stp.dao">property>
bean>
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory" />
bean>
<context:component-scan base-package="com.bj58.stp">
<context:exclude-filter type="aspectj" expression="com.bj58.stp.dao.*"/>
context:component-scan>
<aop:aspectj-autoproxy proxy-target-class="true">aop:aspectj-autoproxy>
beans>
8）db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://10.252.61.65:3306/ftp?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password=root
9）log4j.properties
################ FATAL, ERROR, WARN, INFO, DEBUG
log4j.rootLogger=WARN
### stdout ,stdout,D,E ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern= %d{ABSOLUTE} %5p %c{1}:%L - %m%n
### logFile ###
### save error to another file ###
log4j.appender.D=org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File=D:/logs/test-error.log
log4j.appender.D.Append=true
#error only in this file
log4j.appender.D.Threshold =WARN
log4j.appender.D.layout=org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%t:%r] - [%p] %m%n
10）springmvc-servlet.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-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">
<context:component-scan base-package="com.bj58.stp.controller" />
<mvc:default-servlet-handler />
<mvc:annotation-driven />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
bean>
beans>
另外需要两个最终要的配置文件web.xml和pom.xml，具体配置如下：
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">
<display-name>stpdisplay-name>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
context-param>
<servlet>
<servlet-name>springmvcservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:springmvc-servlet.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>springmvcservlet-name>
<url-pattern>*.dourl-pattern>
servlet-mapping>
<filter>
<filter-name>encodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>encodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
web-app>
pom.xml
<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>4.0.0modelVersion>
<groupId>com.bj58.stpgroupId>
<artifactId>com.bj58.stpartifactId>
<version>0.0.1-SNAPSHOTversion>
<packaging>warpackaging>
<repositories>
<repository>
<id>maven repoid>
<url>http://repo1.maven.org/maven2/url>
repository>
repositories>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<spring.version>4.2.0.RELEASEspring.version>
<slf4j.version>1.6.6slf4j.version>
<log4j.version>1.2.12log4j.version>
<junit.version>4.10junit.version>
<mybatis.version>3.4.1mybatis.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-coreartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-context-supportartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aopartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-txartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>${junit.version}version>
<scope>testscope>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>${log4j.version}version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-apiartifactId>
<version>${slf4j.version}version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>${slf4j.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>${mybatis.version}version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.29version>
dependency>
<dependency>
<groupId>org.codehaus.jacksongroupId>
<artifactId>jackson-mapper-aslartifactId>
<version>1.9.13version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>javax.servlet-apiartifactId>
<version>3.1.0version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>servlet-apiartifactId>
<version>3.0-alpha-1version>
<scope>providedscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
<dependency>
<groupId>org.aspectjgroupId>
<artifactId>aspectjweaverartifactId>
<version>1.8.5version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-coreartifactId>
<version>2.5.2version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
<version>2.5.2version>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>2.3.2version>
<configuration>
<source>1.8source>
<target>1.8target>
<encoding>UTF-8encoding>
configuration>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-surefire-pluginartifactId>
<version>2.16version>
<configuration>
<skip>trueskip>
<argLine>-Dfile.encoding=UTF-8argLine>
configuration>
plugin>
plugins>
build>
project>
3、运行工程，访问页面如下：
1）通过jetty启动服务，在浏览器访问地址：http://localhost:8080/login.jsp
2)用户名和密码进行登录
至此demo搭建成功，可以在此基础上进行扩展，从零到一慢慢积累
4、踩过的坑
1、如果启动工程出现文件查找不到，建议查看配置文件中名称和路径是否配置正确
2、如果服务启动正常访问页面出现404，建议查看jsp或者html前端页面存放路径和返回url是否一致
3、使用过程中请按照上面给定pom中配置的版本，否则出现版本不兼容服务启动失败（你自己找到合适的其他版本组合也可以）