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我只想讀取之前寫出文件的XML節點內容中的字符串。下面是代碼:無法使用libxml2讀取XML節點的內容
int main() {
xmlNodePtr n, n2, n3;
xmlDocPtr doc;
xmlChar *xmlbuff;
int buffersize;
xmlChar* key;
doc = xmlNewDoc(BAD_CAST "1.0");
n = xmlNewNode(NULL, BAD_CAST "root");
xmlNodeSetContent(n, BAD_CAST "test1");
n2 = xmlNewNode(NULL, BAD_CAST "devices");
xmlNodeSetContent(n2, BAD_CAST "test2");
n3 = xmlNewNode(NULL, BAD_CAST "device");
xmlNodeSetContent(n3, BAD_CAST "test3");
//n2 = xmlDocCopyNode(n2, doc, 1);
xmlAddChild(n2,n3);
xmlAddChild(n,n2);
xmlDocSetRootElement(doc, n);
xmlSaveFormatFileEnc(FILENAME, doc, "utf-8", 1);
doc = xmlParseFile(FILENAME);
n = xmlDocGetRootElement(doc);
key = xmlNodeListGetString(doc, n, 1);
printf("keyword: %s\n", key);
xmlFree(key);
n = n->children;
key = xmlNodeListGetString(doc, n, 1);
printf("keyword: %s\n", key);
xmlFree(key);
n = n->children;
key = xmlNodeListGetString(doc, n, 1);
printf("keyword: %s\n", key);
xmlFree(key);
n2 = xmlNewNode(NULL, BAD_CAST "address");
xmlAddChild(n,n2);
xmlDocSetRootElement(doc, n);
xmlSaveFormatFileEnc(FILENAME, doc, "utf-8", 1);
return 0;
}
這段代碼的輸出是 - > 關鍵字:(空) 關鍵字:TEST1 關鍵字:(空)
我爲什麼不能閱讀TEST2 TEST3和?
在此先感謝。