successView isn't set 在spring中是个什么意思？

Question

package spring;import org.springframework.web.servlet.mvc.SimpleFormController;
import org.springframework.web.servlet.*;
import java.net.*;
import java.util.*;public class Login extends SimpleFormController {
    private String failview;
    private String succview;
    public Login() {
    }    protected ModelAndView onSubmit(Object cmd,
                                    BindException e) {
        LoginInfo loginfo = (LoginInfo) cmd;
        System.out.println("a");
        if (login(loginfo) == 0) {
            HashMap result_map = new HashMap();
            result_map.put("logininfo", loginfo);
            LinkedList msg_list = new LinkedList();
            msg_list.add("msg1");
            msg_list.add("msg2");
            msg_list.add("msg3");
            result_map.put("msg", msg_list);
            
            return new ModelAndView(this.getSuccessView(), result_map);
        } else {
            return new ModelAndView(this.getFailview());
        }    }    public String getFailview() {
        return this.failview;
    }    public String getSuccview() {
        return this.succview;
    }    public void setFailview(String failview) {
        this.failview = failview;
    }    public void setSuccview(String succ_view) {
        this.succview = succview;
    }    private int login(LoginInfo info) {
        System.out.println(info.getPassword() + ":");
        if (info.getUsername().equalsIgnoreCase("wen") &&
            info.getPassword().equalsIgnoreCase("111111")) {
            return 1;
        } else {
            return 0;
        }
    }
}

Answer 1

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<!--  - Application context definition for "springapp" DispatcherServlet.  -->
<beans>
  <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass">
      <value>org.springframework.web.servlet.view.JstlView</value>
    </property>
    <property name="prefix">
      <value>/WEB-INF/view/</value>
    </property>
    <property name="suffix">
      <value>.jsp</value>
    </property>
  </bean>
  <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
      <props>
        <prop key="/login.do">LoginAction</prop>
      </props>
    </property>
  </bean>
  <bean id="LoginAction" class="spring.Login">
    <property name="commandClass">
      <value>spring.LoginInfo</value>
    </property>
     <property name="failview">
      <value>loginfail</value>
    </property>
      <property name="succview">
      <value>success</value>
    </property>
  </bean>
</beans>

Answer 2

运行后出现的错误为
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'LoginAction' defined in ServletContext resource [/WEB-INF/config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'failview' of bean class [spring.Login]: Bean property 'failview' is not writable or has an invalid setter method: Does the parameter type of the setter match the return type of the getter?

Answer 3

<bean id="LoginAction" class="spring.Login">
    <property name="commandClass">
      <value>spring.LoginInfo</value>
    </property>
     <property name="failview">
      <value>loginfail</value>
    </property>
      <property name="succview">
      <value>success</value>
    </property>
  </bean>可能是这里问题，
仔细把资料查下，看具体是<property name="succview">里边的属性名是不是succview.

Answer 4

NotWritablePropertyException检查一下配置文件中的定义的属性在类里有没有对应的setter（注意拼写、大小写）

Answer 5

SimpleFormController里有successView,是继承的