springmvc-servlet.xml文件
<?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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="controller" />
<context:component-scan base-package="service" />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value = ".jsp" />
</bean>
</beans>
web.xml文件
<?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">
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
service层代码
package service;
import java.util.ArrayList;
import org.springframework.stereotype.Service;
import pojo.User;
@Service
public class UserServiceImpl implements UserService{
private static ArrayList<User> users = new ArrayList<>();
@Override
public boolean addUser(User u) {
// TODO Auto-generated method stub
if(!"IT民工".equals(u.getCarrer())) {
users.add(u);
return true;
}
return false;
}
public ArrayList<User> getUser() {
// TODO Auto-generated method stub
return users;
}
}
控制层代码
package controller;
import java.util.HashMap;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import pojo.User;
import service.UserService;
@Controller
@RequestMapping("/user")
public class UserController {
private static final Log logger = LogFactory.getLog(UserController.class);
@Autowired
private UserService userService;
@RequestMapping(value = "/input")
public String inputUser(Model model) {
HashMap<String, String> hobbys = new HashMap<>();
hobbys.put("篮球", "篮球");
hobbys.put("点玩", "电玩");
hobbys.put("游泳", "游泳");
hobbys.put("乒乓球", "乒乓球");
model.addAttribute("user", new User());
model.addAttribute("hobbys", hobbys);
model.addAttribute("carrers", new String[] {"教师","学生","coding搬运工","IT民工","其他"});
model.addAttribute("houseRegisters", new String[] {"北京","上海","广州","深圳","其他"});
return "useradd";
}
@RequestMapping("/save")
public String addUser(@ModelAttribute User user,Model model) {
if(userService.addUser(user)) {
logger.info("成功");
return "redirect:/user/list";
}else {
logger.info("失败");
HashMap<String, String> hobbys = new HashMap<>();
hobbys.put("篮球", "篮球");
hobbys.put("点玩", "电玩");
hobbys.put("游泳", "游泳");
hobbys.put("乒乓球", "乒乓球");
model.addAttribute("user", new User());
model.addAttribute("hobbys", hobbys);
model.addAttribute("carrers", new String[] {"教师","学生","coding搬运工","IT民工","其他"});
model.addAttribute("houseRegisters", new String[] {"北京","上海","广州","深圳","其他"});
return "useradd";
}
}
@RequestMapping("/list")
public String listUser(Model model) {
List<User> users = userService.getUser();
model.addAttribute("user", users);
return "userList";
}
}```
目录结构![图片说明](https://img-ask.csdn.net/upload/201904/14/1555240537_144458.png)
报错信息![图片说明](https://img-ask.csdn.net/upload/201904/14/1555240603_581132.png)