用@Test类测试没问题，但起项目就会报错，各位大神帮看一下什么原因
报错信息：
严重: Servlet.service() for servlet [SpringServlet] in context with path [/gdesign] threw exception [Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/ibatis/session/SqlSessionFactoryBuilder] with root cause
java.lang.ClassNotFoundException: org.apache.ibatis.session.SqlSessionFactoryBuilder
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at com.gdesign.tools.UserTools.getUserFromPk(UserTools.java:63)
at com.gdesign.web.login.LoginController.Login(LoginController.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java代码
public User getUserFromPk(int pk) {
String resource = "com/gdesign/mybatis/conf.xml";
//使用类加载器加载mybatis的配置文件（它也加载关联的映射文件）
InputStream is = UserTools.class.getClassLoader().getResourceAsStream(resource);
//构建sqlSession的工厂
SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
//创建能执行映射文件中sql的sqlSession
SqlSession session = sessionFactory.openSession();
String statement = "com.gdesign.mybatis.mapping.userMapper.getUser";//映射sql的标识字符串
//执行查询返回一个唯一user对象的sql
User user = session.selectOne(statement, pk);
return user;
}
配置文件
```<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.3//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<!-- 配置数据库连接信息 -->
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
</environments>
<mappers>
<!-- 注册userMapper.xml文件， -->
<mapper resource="com/gdesign/mybatis/mapping/UserMapper.xml"/>
<!-- 注册BuyOrderMapper.xml文件， -->
<mapper resource="com/gdesign/mybatis/mapping/BuyOrderMapper.xml"/>
</mappers>
<?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">
resultType="com.gdesign.entity.User">
select * from user where pk_user = #{pk_user} and dr = 0
resultType="String">
select name from User where pk_user = #{pk_user} and dr = 0
select * from User where dr = 0
在你的后台代码里，没有添加注解@Controller。。。。。。
at com.gdesign.tools.UserTools.getUserFromPk(UserTools.java:63)
看看一看这里面涉及的都在配置文件里面配了没
对呀。那里面的25行报错。你写的什么内容报错呢
ibatis-core的jar包有没有？
报错信息第八行，是你写的代码吗？
这就是那个类
package com.gdesign.web.login;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.gdesign.entity.User;
import com.gdesign.tools.UserTools;
@Controller
@RequestMapping(value = "/login")
public class LoginController {
@RequestMapping(value = "loginMethod", method = RequestMethod.POST)
@ResponseBody
public boolean Login(HttpServletRequest request){
String userId = request.getParameter("userId");
String password = request.getParameter("password");
UserTools ut = new UserTools();
try {
User user = ut.getUserFromPk(Integer.valueOf(userId));
if(user!=null&&user.getPassword().equals(password)){
//登录成功
//设置session
HttpSession session = request.getSession();
session.setAttribute("ID", user.getpk_user()+"");
session.setAttribute("name", user.getName());
return true;
}
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return false;
}
}
https://zhidao.baidu.com/question/1756437858580492308.html
你dbug进去看看进入方法之后哪一行报错。java.lang.ClassNotFoundException。。。。是不是你的 "com/gdesign/mybatis/conf.xml";文件没有找到。