1.前言
最近有个项目老项目要维护,公司也不愿意花时间重构,之前运行环境是tomcat6、jdk7。
目前升级为springboot模式,各种spring相关框架都进行版本升级,使用maven加载依赖包,支持JSP。
前面问题都解决了,就springboot添加JSP运行环境频繁出问题,现将问题及其解决方案做记录分享。
2.springboot支持JSP.。pom.xml增加内容如下:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- servlet依赖(springboot) -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- tomcat的支持-->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
3.Failed to scan [file:/D:/maven/org/openoffice/jurt/3.0.1/ridl.jar] from classloader hierarchy
报错信息如下
18:24:28.211 [main] WARN o.a.t.u.s.StandardJarScanner - [log,175] - Failed to scan [file:/D:/maven/org/openoffice/jurt/3.0.1/ridl.jar] from classloader hierarchy
java.io.FileNotFoundException: D:\maven\org\openoffice\jurt\3.0.1\ridl.jar (系统找不到指定的文件。)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:231)
at java.util.zip.ZipFile.<init>(ZipFile.java:156)
at java.util.jar.JarFile.<init>(JarFile.java:170)
at java.util.jar.JarFile.<init>(JarFile.java:134)
at org.apache.tomcat.util.compat.JreCompat.jarFileNewInstance(JreCompat.java:272)
at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:65)
at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49)
at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:383)
at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:318)
at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:270)
at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:233)
at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262)
at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104)
at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:83)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4936)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1328)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1318)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:866)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:795)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1328)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1318)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:866)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:249)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:428)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:923)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104)
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:481)
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:184)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:162)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292)
改造TomcatServletWebServerFactory tomcatContextCustomizers 的属性
解决方案如下:
@Bean
public WebServerFactoryCustomizer<TomcatServletWebServerFactory> customizer() {
return (factory) -> {
factory.addContextCustomizers((context) -> {
((StandardJarScanner)context.getJarScanner()).setScanManifest(false);
});
};
}
4.org.apache.jasper.JasperException: The absolute uri: [http://java.sun.com/jsp/jstl/core] cannot be resolved in either web.xml or the jar files deployed with this application
遇到这个问,解决方案同上面一样即:
@Bean
public WebServerFactoryCustomizer<TomcatServletWebServerFactory> customizer() {
return (factory) -> {
factory.addContextCustomizers((context) -> {
((StandardJarScanner)context.getJarScanner()).setScanManifest(false);
});
};
}