at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
来源:互联网 发布:matlab table转为矩阵 编辑:程序博客网 时间:2024/05/16 06:42
解决方法一:
启动发布一切都正常。出入项目请求路径却包错:
- java.lang.NullPointerException
- at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22)
查询资料,原因是项目jar包和tomcat的jar包冲突了。不兼容。
删除工程里的jsp-api.jar和servlet-api.jar两个jar包,这种解决方案是对的,但是删除完这两个jar,可能还是有问题,此时需要仔细查看自己工程里的.classpath文件,特别注意kind=“lib” 是不是引用了jsp-api.jar和servlet-api.jar这两个jar包,可能会引用tomcat里的jar包,如果发现有这种情况,必须删除那两行,重启tomcat,应该就没问题了!
解决方法二:
由于 D:\Workspaces\studyui\.settings\org.eclipse.wst.common.project.facet.core.xml
下的 installed facet="jst.web" version版本为3.0就报上面的错,把它改为 2.2 就好了
<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<fixed facet="wst.jsdt.web"/>
<installed facet="wst.jsdt.web" version="1.0"/>
<installed facet="java" version="1.6"/>
<installed facet="jst.web" version="2.2"/>
</faceted-project>
0 0
- 终极解决方案 at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
- 终极解决方案 at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
- at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
- at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
- at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
- at org.apache.jsp.index_jsp._jspInit(index_jsp.java:22) 报空指针
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