jsp页面中使用<s:debug></s:debug>标签报错

本文介绍了一种在JSP页面使用&sdebug标签时出现的错误及其解决方案。错误出现在请求设置中使用了特定关键字作为名称,通过更改请求属性的名称成功解决了这一问题。

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关于在jsp页面中使用<s:debug></s:debug>标签报错



今天在开发过程中遇到一个很奇葩的问题 , <s:debug>标签没错 , struts标签的引入没错 , 但是就是在jsp页面中引用struts中的<s:debug></s:debug>报错 , 当我把<s:debug></s:debug>标签去掉的时候,就不会报错了 .
报错内容如下

Struts Problem Report


Struts has detected an unhandled exception:


Messages:	
Class: org.apache.struts2.components.template.TemplateEngineManager File: TemplateEngineManager.java Method: getTemplateEngine Line: 102 - org/apache/struts2/components/template/TemplateEngineManager.java:102:-1
File:	org/apache/struts2/components/template/TemplateEngineManager.java
Line number:	102
Stacktraces


org.apache.jasper.JasperException: Class: org.apache.struts2.components.template.TemplateEngineManager File: TemplateEngineManager.java Method: getTemplateEngine Line: 102 - org/apache/struts2/components/template/TemplateEngineManager.java:102:-1
   
    
Class: org.apache.struts2.components.template.TemplateEngineManager File: TemplateEngineManager.java Method: getTemplateEngine Line: 102 - org/apache/struts2/components/template/TemplateEngineManager.java:102:-1
   
    
java.lang.NullPointerException
附一张报错贴图





网上查了些方法 ,但都无果 ,后来发现这是一个很简单的问题:
看看在Aciton当中request的名字是否正确,看看我现在的key,可能你设成了起冲突的名字或者关键字什么的

	//跳转到论坛
	public String forum(){
		request.setAttribute("theme",themeService.listTheme(plateFrom.getPId()));
		return "forum";
	}


大家把request的key改了试试看行不行
request.setAttribute("abcde",themeService.listTheme(plateFrom.getPId()));

大家以后在命名的时候考虑到是否是保留字或者关键字,遇到报错多考虑一下是不是出了类似问题也许就没那么费神了(原创文章,转载请注明出处)
<pre name="code" class="java">



                
D:\biancheng\yf服务器代码\jdwlw>mvn clean package [INFO] Scanning for projects... [ERROR] [ERROR] Some problems were encountered while processing the POMs: [ERROR] Malformed POM D:\biancheng\yf服务器代码\jdwlw\pom.xml: expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<dependency>\r\n\t\t\t\u6781<g... @122:7) @ D:\biancheng\yf服务器代码\jdwlw\pom.xml, line 122, column 7 [ERROR] 'dependencies.dependency.groupId' for cn.jpush.api极:jpush-client:jar with value 'cn.jpush.api极' does not match a valid id pattern. @ line 220, column 13 @ [ERROR] The build could not read 1 project -> [Help 1] [ERROR] [ERROR] The project jdwlw:jdwlw:0.0.1-SNAPSHOT (D:\biancheng\yf服务器代码\jdwlw\pom.xml) has 2 errors [ERROR] Malformed POM D:\biancheng\yf服务器代码\jdwlw\pom.xml: expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<dependency>\r\n\t\t\t\u6781<g... @122:7) @ D:\biancheng\yf服务器代码\jdwlw\pom.xml, line 122, column 7 -> [Help 2] [ERROR] 'dependencies.dependency.groupId' for cn.jpush.api极:jpush-client:jar with value 'cn.jpush.api极' does not match a valid id pattern. @ line 220, column 13 [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException [ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/ModelParseException 解决上述报错 pom.xml:<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001极/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>jdwlw</groupId> <artifactId>jdwlw</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>maven Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <!-- 添加仓库配置 --> <repositories> <repository> <id>central</id> <name>Maven Central</name> <url>https://repo.maven.apache.org/maven2</url> </repository> <repository> <id>aliyun</id> <name>Aliyun Maven</name> <url>https://maven.aliyun.com/repository/public</url> </repository> </repositories> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5极</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>4.1.6.RELEASE</version> </dependency> <!-- 修复 ksoap2 依赖 --> <dependency> <groupId>com.google.code.ksoap2</groupId> <artifactId>ksoap2-j2se-core</artifactId> <version>3.6.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>3.2.13.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc-portlet</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> 极<groupId>org.springframework</groupId> <artifactId>spring-websocket</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>quartz</groupId> <artifactId>quartz</artifactId> <version>1.5.2</version> </dependency> <dependency> <groupId>org.apache.ibatis</groupId> <artifactId>ibatis-sqlmap</artifactId> <version>2.3.4.726</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <dependency> <groupId>commons-pool</groupId> <artifactId>commons-pool</artifactId> <version>1.6</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency> <dependency> <groupId>com.belerweb</groupId> <artifactId>pinyin4j</artifactId> <version>2.5.0</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.4.1</version> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.5.0-b01</version> </dependency> <!-- 激光消息推送Starts --> <dependency> <groupId>cn.jpush.api极</groupId> <artifactId>jpush-client</artifactId> <version>3.1.3</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>17.0</version> </dependency> <dependency> <groupId>com.squareup.okhttp</groupId> <artifactId>mockwebserver</artifactId> <version>1.5.4</version> <scope>test</scope> </dependency> <!-- 激光消息推送END --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.11</version> </dependency> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> <version>2.10.0</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>com.lowagie</groupId> <artifactId>itext</artifactId> <version>2.1.7</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-net/commons-net --> <dependency> <groupId>commons-net</groupId> <artifactId>commons-net</artifactId> <version>3.3</version> </dependency> <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.ws.commons.axiom/axiom-api --> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-api</artifactId> <version>1.2.13</version> </dependency> <!-- https://mvnrepository.com/artifact/dom4j/dom4j --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.axis/axis --> <dependency> <groupId>org.apache.axis</groupId> <artifactId>axis</artifactId> <version>1.4</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.xml.rpc/javax.xml.rpc-api --> <dependency> <groupId>javax.xml.rpc</groupId> <artifactId>javax.xml.rpc-api</artifactId> <version>1.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.axis2/axis2 --> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2</artifactId> <version>1.7.6</version> <type>pom</type> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.axis2/axis2-adb --> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2-adb</artifactId> <version>1.7.6</version> </dependency> <!-- https://mvnrepository.com/artifact/soap/soap --> <dependency> <groupId>soap</groupId> <artifactId>soap</artifactId> <version>2.3</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-httpclient/commons-httpclient --> <dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.10.4</version> </dependency> <dependency> <groupId>org.eclipse.paho</groupId> <artifactId>org.eclipse.paho.client.mqttv3</artifactId> <version>1.2.0</version> </dependency> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.7.2</version> </dependency> </dependencies> <build> <finalName>jdwlw</finalName> <plugins> <!-- 修复编译器插件 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.11.0</version> <!-- 添加版本号 --> <configuration> <source>1.8</source> <target>1.8</target> <encoding>utf-8</encoding> <compilerArguments> <extdirs>${project.basedir}/src/main/webapp/WEB-INF/lib</extdirs> </compilerArguments> </configuration> </plugin> </plugins> <resources> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>
最新发布
06-23
评论 3
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