提示错误：The constructor FileInputStream(File) is undefined

最新推荐文章于 2024-12-03 12:28:42 发布

原创最新推荐文章于 2024-12-03 12:28:42 发布 · 1.2w 阅读

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本文介绍了解决Struts2框架中文件上传时出现的错误方法。主要问题在于Struts2配置或代码中对文件类型引用不正确，通过调整导入语句从使用Struts2的File类更改为标准Java IO包中的File类来解决问题。

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用Struts2上传文件，报错如下：

警告: Error setting expression 'upload' with value '[Ljava.io.File;@69c67db'
ognl.MethodFailedException: Method "setUpload" failed for object com.teng.action.UploadAction@3e2f1b1a [java.lang.NoSuchMethodException: com.teng.action.UploadAction.setUpload([Ljava.io.File;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1265)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1454)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:85)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:28)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2225)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:65)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2225)
at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
at ognl.SimpleNode.setValue(SimpleNode.java:301)