springboot集成jsp 各种异常处理

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：

        
            org.springframework.boot
            spring-boot-starter-tomcat
            provided
          
        
        
            javax.servlet
            servlet-api
            2.5
            provided
        
        
            javax.servlet.jsp.jstl
            jstl
            1.2
        
        
        
            org.apache.tomcat.embed
            tomcat-embed-jasper
            provided
        

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.(ZipFile.java:231)
	at java.util.zip.ZipFile.(ZipFile.java:156)
	at java.util.jar.JarFile.(JarFile.java:170)
	at java.util.jar.JarFile.(JarFile.java:134)
	at org.apache.tomcat.util.compat.JreCompat.jarFileNewInstance(JreCompat.java:272)
	at org.apache.tomcat.util.scan.JarFileUrlJar.(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.(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 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 customizer() {
        return (factory) -> {
            factory.addContextCustomizers((context) -> {
                ((StandardJarScanner)context.getJarScanner()).setScanManifest(false);
            });
        };
    }