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进行controller层测试时报404错误,请问可能是哪里出现问题。
404一般就是访问的路径不存在导致的,可能的地方有以下几处:
spring-web.xml里面的package扫描处或者resolver设置不对,可以参考我的
<?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" /> </beans>
controller java代码里的路径没有设置或者访问的路径不对,或者缺少@Controller等标签
如果是idea,去掉shoolMall访问试试
修改完成后,记得clean tomcat 重启一下,看看ide控制台有没有报错
谢谢老师这么晚还回答,我用的是idea去掉shoolMall后可以成功访问了,不过当我在spring-web.xml中加入<!-- 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>这一段后会报无法创建bean的异常,是因为还没有做后续相对应的配置吗
<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.imooc</groupId> <artifactId>myo2o</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>myo2o Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <spring.version>4.3.7.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</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>${spring.version}</version> </dependency> <!-- 2)这个jar 文件是所有应用都要用到的,它包含访问配置文件、创建和管理bean 以及进行Inversion of Control / Dependency Injection(IoC/DI)操作相关的所有类。如果应用只需基本的IoC/DI 支持,引入spring-core.jar 及spring-beans.jar 文件就可以了。 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${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>3.1.0</version> </dependency> <!-- json解析 --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.8.7</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</version> </dependency> <!-- DAO: MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.2</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!-- 数据库 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.37</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</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> <!-- 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>
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