参考：
Java框架搭建-Maven、Mybatis、Spring MVC整合搭建
SSM框架——Spring+SpringMVC+Mybatis的搭建教程
一 下载并安装Eclipse-jee
二 新建Maven项目
- 菜单
File -> New -> Maven Project， - 点击
Next，在Archetype列表中选择maven-archetype-webapp， - 点击
Next，在Group Id中填入包名，此处为com.vita，Artifact Id中填入工程名，此处为First，Finish - 新建项目后，会看到报错，这是因为
build path没有引入java ee包- 设置
build path- 右键项目，
Build Path -> Configure Build Path... -> Libraries - 双击
JRE System Library以编辑，选择Alternate JRE或Workspace default JRE，这里选择Alternate JRE，Finish
- 右键项目，
- 设置
三 项目配置文件配置
1 配置pom.xml
4.0.0
com.vita
First
war
1.0-SNAPSHOT
First Maven Webapp
http://maven.apache.org
4.0.5.RELEASE
3.2.1
1.6.6
1.2.12
5.1.35
org.springframework
spring-core
${spring.version}
org.springframework
spring-oxm
${spring.version}
org.springframework
spring-context
${spring.version}
org.springframework
spring-context-support
${spring.version}
org.springframework
spring-aop
${spring.version}
org.springframework
spring-aspects
${spring.version}
org.springframework
spring-tx
${spring.version}
org.springframework
spring-jdbc
${spring.version}
org.springframework
spring-web
${spring.version}
org.springframework
spring-test
${spring.version}
test
org.springframework
spring-webmvc
${spring.version}
org.springframework
spring-web
${spring.version}
mysql
mysql-connector-java
${mysql.version}
commons-dbcp
commons-dbcp
1.2.2
com.alibaba
druid
0.2.23
com.alibaba
fastjson
1.1.41
log4j
log4j
${log4j.version}
org.slf4j
slf4j-api
${slf4j.version}
org.slf4j
slf4j-log4j12
${slf4j.version}
ch.qos.logback
logback-classic
1.1.2
ch.qos.logback
logback-core
1.1.2
org.logback-extensions
logback-ext-spring
0.1.1
org.codehaus.jackson
jackson-mapper-asl
1.9.13
commons-fileupload
commons-fileupload
1.3.1
commons-io
commons-io
2.4
commons-codec
commons-codec
1.9
org.mybatis
mybatis
${mybatis.version}
org.mybatis
mybatis-spring
1.2.2
javax.servlet
javax.servlet-api
3.0.1
javax.servlet.jsp
javax.servlet.jsp-api
2.3.2-b01
javax.servlet
jstl
1.2
junit
junit
3.8.1
test
First
2 其他配置文件
以下四个配置文件（jdbc.properties, log4j.properties, spring-mvc.xml, spring-mybatis.xml）都创建在
Java Resources -> src/main/resources文件夹下
-
jdbc.propertiesdriver=com.mysql.jdbc.Driver # test为数据库名 url=jdbc:mysql://localhost:3306/test # 数据库访问用户名 username=root # 数据库访问密码，如无密码则不填 password= # 定义初始连接数 initialSize=1 # 定义最大连接数 maxActive=20 # 定义最大空闲 maxIdle=20 # 定义最小空闲 minIdle=1 # 定义最长等待时间 maxWait=60000 -
log4j.properties### set log levels ### #log4j.rootLogger = debug , stdout , D , E log4j.rootLogger = debug , stdout , D ### output to the console ### 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 log4j.appender.stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n ### Output to the log file ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/log.log log4j.appender.D.Append = true log4j.appender.D.Threshold = DEBUG 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 ### Save exception information to separate file ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/error.log log4j.appender.D.Append = true log4j.appender.D.Threshold = ERROR 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 -
spring-mvc.xml，注意包名，当前包名为com.vitatext/html;charset=UTF-8 -
spring-mybatis.xml，注意包名，当前包名为com.vita
四 数据库代码自动生成
建库，建表，当前使用MySQL，建库
test，建表user-
下载包
mybatis-3.4.5.jar ,
mybatis-generator-core-1.3.6.jar （包含在
mybatis-generator-core-1.3.6.zip中）,mysql-connector-java-5.1.39-bin.jar （包含在
mysql-connector-java-5.1.45.zip中）工程中新建一个文件夹存放这些包，此处在工程根目录下建立
generate文件（文件名自取）以存放 -
在上一步骤中所建目录下（此处为
generate），新建文件generatorConfig.xml，用以自动生成代码，如下：注意
jdbcConnection标签中的数据库参数设置 -
该目录下执行，生成代码
java -jar mybatis-generator-core-1.3.6.jar -configfile generatorConfig.xml -overwrite注意
mybatis-generator-core包的版本，对应下载包的版本备注：代码自动生成这里通过命令行的方式，也可以通过eclipse的插件方式生成
命令执行前应在目录下新建
src文件夹，否则执行时会提示找不到src路径，执行后，刷新工程，当前目录下的
src（generate\src）文件夹中会生成对应代码文件：com/vita/dao/UserMapper.java,com/vita/domain/User.java,com/vita/mapping/UserMapper.xml
五 编写代码
在
Java Resources -> src/main/java下新建包：com.vita.controller,com.vita.dao,com.vita.domain,com.vita.mapping,com.vita.service,com.vita.service.impl将前面自动生成的代码文件复制到对应包下
-
com.vita.service下新建接口IUserService.java：package com.vita.service; import com.vita.domain.User; public interface IUserService { public User getUserById(int id); } -
com.vita.service.impl下新建IUserService的实现类UserServiceImpl.java：注意：添加@Service 注解，否则不被识别
package com.vita.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.vita.dao.IUserDao; import com.vita.domain.User; import com.vita.service.IUserService; @Service public class UserServiceImpl implements IUserService { @Autowired private IUserDao userDao; public User getUserById(int id) { return userDao.selectByPrimaryKey(id); } } -
com.vita.controller下新建UserController.java控制器：注意：添加@Controller 注解，否则不被识别
package com.vita.controller; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import com.vita.domain.User; import com.vita.service.impl.UserServiceImpl; @Controller @RequestMapping("/user") public class UserController { public UserController() { System.out.println("UserController"); } @Resource private UserServiceImpl userService; @RequestMapping(value = "/showUser", method = RequestMethod.GET) public String toIndex(HttpServletRequest request, Model model) { System.out.println("UserController showUser"); int id = Integer.parseInt(request.getParameter("id")); User user = userService.getUserById(id); System.out.println("user: " + user); // request.setAttribute("user", user); model.addAttribute("user", user); return "showUser"; } } -
在
Deployed Resources -> webapp/WEB-INF目录下新建文件夹jsp（文件夹名自取），用以存放返回的页面，jsp目录下新建showUser.jsp：<%@ page isELIgnored="false" language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8" import="java.util.*,com.vita.domain.*"%>Title ${user.name} ${user.email} -
web.xml配置如下：Archetype Created Web Application log4jConfigLocation classpath:log4j.properties 加载日志文件 contextConfigLocation classpath:spring-mybatis.xml encodingFilter org.springframework.web.filter.CharacterEncodingFilter encoding UTF-8 encodingFilter /* org.springframework.web.util.Log4jConfigListener org.springframework.web.context.ContextLoaderListener org.springframework.web.util.IntrospectorCleanupListener SpringMVC org.springframework.web.servlet.DispatcherServlet contextConfigLocation classpath:spring-mvc.xml 1 SpringMVC / /index.jsp
六 结束
到此，demo工程搭建结束，Eclipse中启动Tomcat Server，即可访问：
例：http://localhost:8080/First/user/showUser?id=2
错误记录
web.xml 报错The content of element type "web-app" must match ...
错误详情：
The content of element type "web-app" must match "(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)".错误原因：文档内容标签顺序不符合web-app_2_3.dtd规范
-
解决方案：严格按照提示的顺序安放标签
参考：
web.xml 报错The content of element type "web-app" must match
StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.vita.service.IUserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}
- 错误原因：
XXXService未加注解@Service
Servlet.service() for servlet [SpringMVC] in context with path [/First] threw exception [Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.vita.dao.IUserDao.selectByPrimaryKey] with root cause java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.vita.dao.IUserDao.selectByPrimaryKey
错误原因：
XXXMapper.xml中mapper标签的namespace错误-
例：
参考：
mybatis一个怪异的问题: Invalid bound statement not found
.jsp不显示（接收不到）数据（数据已从数据库取到）
-
解决方案：
在
.jsp上面添加<%@ page isELIgnored="false" %>（测试可行）-
或者修改
web.xml，添加version版本，如下：（未测试成功）
参考：
SSM框架——Spring+SpringMVC+Mybatis的搭建教程