excel导出添加水印

[{"title":"（ 6 个子文件 2.51MB ） excel导出添加水印","children":[{"title":"通过POI给导出的excel添加水印","children":[{"title":"通过POI给excel添加水印","children":[{"title":".settings","children":[{"title":"org.eclipse.jdt.core.prefs <span style='color:#111;'> 598B </span>","children":null,"spread":false}],"spread":true},{"title":"src","children":[{"title":"poiexe.java <span style='color:#111;'> 2.61KB </span>","children":null,"spread":false},{"title":"ImageUtils.java <span style='color:#111;'> 2.19KB </span>","children":null,"spread":false},{"title":"ExcelWaterRemarkUtils.java <span style='color:#111;'> 4.17KB </span>","children":null,"spread":false}],"spread":true},{"title":"lib","children":[{"title":"poi-3.16.jar <span style='color:#111;'> 2.56MB </span>","children":null,"spread":false},{"title":"commons-codec-1.6.jar <span style='color:#111;'> 227.32KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true}]