eclipse中导入的项目报错，但是它的子文件不报错，如何解决？

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<p>借下网友的问题啊：</p>
<p><span>myeclipse中，项目上有个叉报错，但是文件中一个叉都没有，我的项目文件中一个错都没有，为什么项目的图标上有个红叉，我是把项目提交到svn上的，没有错，一点改动都没有，前些日子剪出时，先是项目有小红叉，等加载完后就没有了，可现在剪出后加载完了依然项目图标中依然有红叉，但一个文件都没错，这是为什么啊，请各位大哥大姐帮帮忙，小弟先谢过了~~</span></p>
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<p>我也遇到这个问题：</p>
<p>解决办法是：直接上图</p>
<p>1.查看问题所在：</p>
<p><img src="https://img-blog.csdn.net/20141105181136788?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""></p>
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<p>2.查看问题报错：</p>
<p><img src="https://img-blog.csdn.net/20141105181251169?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""></p>
<p>详情：</p>
<p><img src="https://img-blog.csdn.net/20141105181306894?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""></p>
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<p>不用多解释编译版本和安装版本不对应。</p>
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<p>3.修改版本：</p>
<p><span>在项目上右键Properties->myeclipse--->Project Facets，在打开的Project Facets页面中的Java下拉列表中，选择相应版本。</span><br data-filtered="filtered"><span>有可能是java1.6 改成java6之类的</span></p>
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<p><span><img src="https://img-blog.csdn.net/20141105181733794?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""></span></p>
<p><span><img src="https://img-blog.csdn.net/20141105181746508?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""><br data-filtered="filtered"></span></p>
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<p><img src="https://img-blog.csdn.net/20141105182209140?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaHVhaXNodW1pbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""></p>
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<p>大功告成<br data-filtered="filtered"></p>
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