验证Controller:500错误
来源:2-10 验证Controller
zoyoxn
2021-07-21
现在评论区找了一遍大家的解决方法,但是要么不适合我,要么没有成效,所有还是请老师帮忙看一下是是什么错误
在Dao验证和Service验证都没有问题
因此贴一下spring-web.xml:
<?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-3.2.xsd">
<!-- 配置SpringMVC -->
<!-- 1.开启SpringMVC注解模式 -->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置 (1)加入对静态资源的处理:js,gif,png (2)允许使用"/"做整体映射 -->
<mvc:resources mapping="/resources/**" location="/resources" />
<mvc:default-servlet-handler />
<!-- 3.定义视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/html/"></property>
<property name="suffix" value=".html"></property>
</bean>
<!-- 文件上传解析器 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<!-- 1024 * 1024 * 20 = 20M -->
<property name="maxUploadSize" value="20971520"></property>
<property name="maxInMemorySize" value="20971520"></property>
</bean>
<!-- 4.扫描web相关的bean -->
<context:component-scan base-package="com.imooc.o2o.web" />
<!-- 5.权限拦截器 -->
</beans>
其中,/rescources/报红色
由于我是idea环境,因此访问url时不需要加上o2o,访问http://localhost:8080/superadmin/listarea
结果如下:
我的tomcat版本为9.0
AreaController如下:除了list变量名修改为了areaList,其余都一样,修改成list也是一样的错误,因此应该与此无关
package com.imooc.o2o.web.superadmin;
import com.imooc.o2o.entity.Area;
import com.imooc.o2o.service.AreaService;
import org.springframework.beans.factory.annotation.Autowired;
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 java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 想要调用Controller层的方法,就需要为其添加一个url路径
*/
@Controller
@RequestMapping("/superadmin")
public class AreaController {
@Autowired
private AreaService areaService;
/**
* 将返回值自动转为json对象返回给前端@RequestBody
*/
@RequestMapping(value = "/listarea",method = RequestMethod.GET)
@ResponseBody
public Map<String,Object> listArea()
{
Map<String,Object> modelMap= new HashMap<String, Object>();
List<Area> areaList=new ArrayList<Area>();
try
{
areaList=areaService.getAreaList();
modelMap.put("rows",areaList);
modelMap.put("total",areaList.size());
}
catch (Exception e)
{
e.printStackTrace();
modelMap.put("success",false);
modelMap.put("errMsg",false);
}
return modelMap;
}
}
写回答
1回答
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zoyoxn
提问者
2021-07-21
我的pom.xml文件,对比视频和源码几次了,除了注释掉一些暂时未用到的,我觉着是没问题的
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.example</groupId> <artifactId>Store</artifactId> <version>1.0-SNAPSHOT</version> <properties> <spring.version>5.1.8.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.12</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.13.2</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.3</version> </dependency> <!-- Spring --> <!-- 1)包含Spring 框架基本的核心工具类。Spring 其它组件要都要使用到这个包里的类,是其它组件的基本核心 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>5.2.11.RELEASE</version> </dependency> <!-- 2)这个jar 文件是所有应用都要用到的,它包含访问配置文件、创建和管理bean 以及进行Inversion of Control / Dependency Injection(IoC/DI)操作相关的所有类。如果应用只需基本的IoC/DI 支持,引入spring-core.jar 及spring-beans.jar 文件就可以了。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <!-- 3)这个jar 文件为Spring 核心提供了大量扩展。可以找到使用Spring ApplicationContext特性时所需的全部类,JDNI 所需的全部类,instrumentation组件以及校验Validation 方面的相关类。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <!-- 4) 这个jar 文件包含对Spring 对JDBC 数据访问进行封装的所有类。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- 5) 为JDBC、Hibernate、JDO、JPA等提供的一致的声明式和编程式事务管理。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <!-- 6)Spring web 包含Web应用开发时,用到Spring框架时所需的核心类,包括自动载入WebApplicationContext特性的类、Struts与JSF集成类、文件上传的支持类、Filter类和大量工具辅助类。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <!-- 7)包含SpringMVC框架相关的所有类。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <!-- 8)Spring test 对JUNIT等测试框架的简单封装 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!-- Servlet web --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> <scope>provided</scope> </dependency> <!-- json解析 --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.9</version> </dependency> <!-- Map工具类 对标准java Collection的扩展 spring-core.jar需commons-collections.jar --> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.2</version> </dependency> <!-- DAO: MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.1</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.1</version> </dependency> <!-- 数据库 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.23</version> </dependency> <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 --> <!-- <dependency>--> <!-- <groupId>c3p0</groupId>--> <!-- <artifactId>c3p0</artifactId>--> <!-- <version>0.9.1.2</version>--> <!-- </dependency>--> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.4</version> </dependency> <!-- 图片处理 --> <!-- https://mvnrepository.com/artifact/net.coobird/thumbnailator --> <dependency> <groupId>net.coobird</groupId> <artifactId>thumbnailator</artifactId> <version>0.4.8</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.13.2</version> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>5.2.11.RELEASE</version> <scope>compile</scope> </dependency> <!-- https://mvnrepository.com/artifact/com.github.penggle/kaptcha --> <!-- <dependency>--> <!-- <groupId>com.github.penggle</groupId>--> <!-- <artifactId>kaptcha</artifactId>--> <!-- <version>2.3.2</version>--> <!-- </dependency>--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.2</version> </dependency> <!-- <!– redis客户端:Jedis –>--> <!-- <dependency>--> <!-- <groupId>redis.clients</groupId>--> <!-- <artifactId>jedis</artifactId>--> <!-- <version>2.9.0</version>--> <!-- </dependency>--> </dependencies> <build> <finalName>o2o</finalName> <plugins> <plugin> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin --> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.6.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF8</encoding> </configuration> </plugin> </plugins> </build> </project>
0102021-07-25
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