【Java】java.lang.NoClassDefFoundError: javax/servlet/ServletOutputStream 报错解决
报错的方法栈
在ssm中写了一个
utils
类,定义了main方法测试和查看工具实际数据
运行main方法时报错了,之前都没错,莫名其妙报了错
java.lang.NoClassDefFoundError: javax/servlet/ServletOutputStream
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletOutputStream
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main"
解决办法
pom.xml
中引入的servlet-api
中定义了<scope>provided</scope>
,把这里的provided改成compile