Question

我有两个控制器，一个用于通过数据库登录，另一个用于在spring java中插入数据库中的值。我有一个映射错误。如何在执行期间映射这两个控制器。错误告诉告诉它有一些参考问题。当我只运行登录控制器而不是它工作正常，但一旦我添加我的注册控制器失败。登录后实际需要注册控制器。

enter code here
package com.login.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.login.bean.BorewellBean;
import com.login.delegate.BorewellDelegate;
@Controller
@RequestMapping(value ="/fillup")
@Component
public class BorewellController {

@Autowired
private BorewellDelegate borewelldelegate;

@RequestMapping(method=RequestMethod.GET)
public ModelAndView fillup(HttpServletRequest request,HttpServletResponse     response)
{
    ModelAndView model=new ModelAndView("loginsuccess");
    BorewellBean bean=new BorewellBean();
    model.addObject("bean",bean);
    return model;
}

@RequestMapping(method=RequestMethod.POST )
public ModelAndView executefillup(HttpServletRequest request,HttpServletResponse response,@ModelAttribute("bean")BorewellBean bean)
{   

    ModelAndView model=null;
    try{
        boolean isValidUser=borewelldelegate.setvalue(bean.getBid(),bean.getDate(),bean.getStart(),bean.getStop());
                if(isValidUser)
                {
                    System.out.println("entry done");
                    request.setAttribute("bid",bean.getBid());
                    model=new ModelAndView("welcome");
                }
                else
                {
                    model=new ModelAndView("loginsuccess"); 
                }       
    }
    catch(Exception e)
    {
    }
    return model;


}
}

LoginController.java

enter code here
package com.login.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.login.bean.BorewellBean;
import com.login.bean.LoginBean;
import com.login.delegate.BorewellDelegate;
import com.login.delegate.LoginDelegate;

@Controller
@RequestMapping("/loginform")
public class LoginController {

@Autowired
private LoginDelegate loginDelegate;


@RequestMapping(method=RequestMethod.GET)
public ModelAndView showLogin(HttpServletRequest request,HttpServletResponse response)
{
    ModelAndView model=new ModelAndView("login");
    LoginBean loginbean= new LoginBean();
    model.addObject("loginBean",loginbean);
    return model;
}

@RequestMapping(method=RequestMethod.POST)
public ModelAndView executeLogin(HttpServletRequest request,HttpServletResponse response,@ModelAttribute("loginBean")LoginBean loginBean)
{   
    ModelAndView model=null;
    try{
        boolean isValidUser=loginDelegate.isValidUser(loginBean.getUsername(),loginBean.getPassword());
                if(isValidUser)
                {
                    System.out.println("Login successful");
                    request.setAttribute("loginUser",loginBean.getUsername());


                    model=new ModelAndView("loginsuccess");
                }
                else
                {
                    model=new ModelAndView("login");    
                }       
    }
    catch(Exception e)
    {
    }
    return model;

}
 }



SpringBeanConfiguration.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="

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">

  <bean id="loginDelegate" class="com.login.delegate.LoginDelegate">
    <property name="loginservice" ref="userService"></property>
 </bean>

<bean id="userService" class="com.login.service.UserServiceImpl">
    <property name="userDao" ref="userDao"></property>
</bean>

<bean name="userDao" class="com.login.dao.UserDaoImpl">
    <property name="dataSource" ref="dataSource"></property>
</bean>

 <bean id="borewelldelegate" class="com.login.delegate.BorewellDelegate">
    <property name="borewellservice" ref="borewellserviceimpl">     </property>
</bean>

<bean id="borewellserviceimpl" class="com.login.service.Borewellimpl" >
    <property name="borewelldao" ref="borewelldao"></property>
</bean>

<bean name="borewelldao" class="com.login.dao.Borewelldaoimpl" >
    <property name="dataSource" ref="dataSource"></property>
</bean>  

<bean id="dataSource"  class="org.springframework.jdbc.datasource.DriverManagerDataSource">
 <property name="driverClassName" value="com.mysql.jdbc.Driver" />
  <property name="url" value="jdbc:mysql://localhost:3306/login" />
  <property name="username" value="root" />
 <property name="password" value="rat" />
</bean>

</beans>

我的错误HTTP状态500 - Servlet调度程序的Servlet.init（）引发了异常创建名为'borewellserviceimpl'的bean时出错：注入自动连接的依赖项失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private com.login.dao.Borewelldao com.login.service.Borewellimpl.borewelldao;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到类型为[com.login.dao.Borewelldao]的匹配bean用于依赖：预期至少有1个bean符合此依赖关系的autowire候选资格。依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）} Login.jsp页面在这里输入代码

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"    "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form:form  action="loginform.html"  modelAttribute="loginBean" > 
<table>
<tr>
<td>User Name:<FONT color="red"><form:errors path="username" /></FONT>      </td>
</tr>
<tr>
<td><form:input path="username" /></td>
</tr>
<tr>
<td>Password:<FONT color="red"><form:errors path="password" /></FONT>   </td>
</tr>
<tr>
<td><form:password path="password" /></td>
</tr>
<tr>
<td><input type="submit" value="Submit" /></td>
</tr>
</table>
</form:form>
</body>
</html>

Answer 1

在服务实现的类中使用@Service，在Dao层中必须在所有DAO类中使用@Repository

我在一起运行两个控制器时遇到控制器映射问题

1 个答案: