struts2 file

JavaBean 中：

private File[] pic;

private String[] picContentType;

private String [] picFileName;

setter  getter

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Action中：

JavaBean javaBean

setter getter

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JSP中：

<form action="aaaa" method="post" enctype="multipart/form-data">

<s:file name="javaBean.pic" />

<s:file name="javaBean.pic" />

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约定：xxx，xxxContentType，xxxFileName