获取集团分类根节点前端传null传入后端直接改为空字符串bug修复

 Source/UBCS/ubcs-codeApply/src/main/java/com/vci/rmip/code/client/codeapply/Apply410/TestIntegrateFrame.java

@@ -29,7 +29,6 @@
            tt = classifyVOS.get(level - 1);
        }


        final JFrame j = new JFrame();
        j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel p = new JPanel();