grails树形结构图
用到的插件式dhtmlx，xml为
<?xmlversion='1.0'encoding='iso-8859-1'?>
<treeid="0">
<itemtext="MyComputer"id="1"child="1"im0="my_cmp.gif"im1="my_cmp.gif"im2="my_cmp.gif"call="true"select="yes">
<userdataname="system">true</userdata>
<itemtext="Floppy(A:)"id="11"child="0"im0="flop.gif"im1="flop.gif"im2="flop.gif"/>
<itemtext="LocalDisk(C:)"id="12"child="0"im0="drv.gif"im1="drv.gif"im2="drv.gif"/>
</item>
<itemtext="RecycleBin"id="4"child="0"im0="recyc.gif"im1="recyc.gif"im2="recyc.gif"/>
</tree>
controller中代码为：
defKnowledgeTree={
StringBuffersb=newStringBuffer();
response.setCharacterEncoding("UTF-8")
response.setContentType("text/xml");
defloginUser=UtilsController.getLoginUser(session)
if(loginUser){
defc=KnowledgeType.createCriteria()
defmyKnowledge=c.list(){
and{
isNull("parent")
}
order("dateCreated","desc")
}
try{
sb.append(treeXML(myKnowledge))
}catch(Exceptione){
e.printStackTrace()
}
}else{
sb.append(nologinTreeXML())
}
rendersb.toString()
}
defknowledgeType_tree={
}//建页面时建立knowledgeType_tree。从这个页面调用defknowledgeType_listTree这个方法
defknowledgeType_listTree={
StringBuffersb=newStringBuffer();
response.setCharacterEncoding("UTF-8")
response.setContentType("text/xml");
defloginUser=UtilsController.getLoginUser(session)
if(loginUser){
defc=KnowledgeType.createCriteria()
defmyKnowledge=c.list(){
and{
isNull("parent")
}
order("dateCreated","desc")
}
try{
sb.append(treeXML(myKnowledge))
}catch(Exceptione){
e.printStackTrace()
}
}else{
sb.append(nologinTreeXML())
}
rendersb.toString()
}
privateStringtreeXML(defknowledgeType){
response.setCharacterEncoding("UTF-8")
response.setContentType("text/xml");
StringBuffersb=newStringBuffer();
sb.append("<?xmlversion='1.0'encoding='UTF-8'?>")
sb.append('<treeid="0">')
try{
for(KnowledgeTypeud:knowledgeType){
sb.append(makeKnowledgeTreeXML(ud))
}
}catch(Exceptione){
e.printStackTrace()
}
sb.append('</tree>')
returnsb.toString()
}
privateStringnologinTreeXML(){
response.setCharacterEncoding("UTF-8")
response.setContentType("text/xml");
StringBuffersb=newStringBuffer();
sb.append("<?xmlversion='1.0'encoding='UTF-8'?>")
sb.append('<treeid="0">')
sb.append("<itemtext='\u4F60\u767B\u5F55\u5DF2\u7ECF\u8D85\u65F6!'id='no_login'aCol='red'/>")
sb.append('</tree>')
returnsb.toString()
}
privateStringmakeKnowledgeTreeXML(KnowledgeTypedepartment){
defresult=""
if(department.childrens){
result='<itemtext="'+department.sortname+'"id="'+department.id+'"im0="folderClosed.gif">'
defc=KnowledgeType.createCriteria()
defchildren=c.list(){
eq("parent",department)
order("dateCreated","desc")
}
for(KnowledgeTypeud:children){
if(ud!=department){
result+=makeKnowledgeTreeXML(ud);
}
}
result+='</item>'
}else{
if(!department.parent&&!department.childrens){
result='<itemtext="'+department.sortname+'"id="'+department.id+'"im0="folderClosed.gif"></item>'
}else{
result+='<itemtext="'+department.sortname+'"id="'+department.id+'"/>'
}
}
returnresult;
}
}
gsp页面：tree.loadXML("${request.getContextPath()}/knowledgeType/knowledgeType_listTree?"+newDate().valueOf());