Libxml2使用实例

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1、XML--Libxml2使用实例一，使用Libxml2生成xml1，编辑生成#include#include#includeintmain(intargc,char**argv){xmlDocPtrdoc=NULL;/*documentpointer*/xmlNodePtrroot_node=NULL,node=NULL,node1=NULL;/*nodepointers*///Createsanewdocument,anodeandsetitasarootnodedoc=xmlNewDoc(BA

2、D_CAST"1.0");root_node=xmlNewNode(NULL,BAD_CAST"root");xmlDocSetRootElement(doc,root_node);//createsanewnode,whichis"attached"aschildnodeofroot_nodenode.xmlNewChild(root_node,NULL,BAD_CAST"node1",BAD_CAST"contentofnode1");//xmlNewProp()createsattributes,whichis"attached"toannode.node=xmlNewC

3、hild(root_node,NULL,BAD_CAST"node3",BAD_CAST"nodehasattributes");xmlNewProp(node,BAD_CAST"attribute",BAD_CAST"yes");//Heregoesanotherwaytocreatenodes.node=xmlNewNode(NULL,BAD_CAST"node4");node1=xmlNewText(BAD_CAST"otherwaytocreatecontent");xmlAddChild(node,node1);xmlAddChild(root_node,node);

4、//DumpingdocumenttostdioorfilexmlSaveFormatFileEnc(argc>1?argv[1]:"-",doc,"UTF-8",1);/*freethedocument*/xmlFreeDoc(doc);xmlCleanupParser();xmlMemoryDump();//debugmemoryforregressiontestsreturn0;}2，编译运行gccmain.c-omain.out-I/usr/include/libxml2-lxml23，生成的xml

5、contentofnode1nodehasattributesotherwaytocreatecontent两个实例，说明如何使用Libxml2遍历xml文档和使Xpath获取特定结点的内容值：程序使用的xml文档如下：contentofnode1nodehasattribute

6、sotherwaytocreatecontent二，遍历程序代1，代码#include#include#includeintmain(intargc,char**argv){xmlDocPtrdoc=NULL;xmlNodePtrcur=NULL;char*name=NULL;char*value=NULL;xmlKeepBlanksDefault(0);if(argc<2){printf("ERROR:argcmustbe2orabov

7、e.");return-1;}//createDomtreedoc=xmlParseFile(argv[1]);if(doc==NULL){printf("ERROR:Loadingxmlfilefailed.");exit(1);}//getrootnodecur=xmlDocGetRootElement(doc);if(cur==NULL){printf("ERROR:emptyfile");xmlFreeDoc(doc);exit(2);}//walkthetreecur=