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C 中无法使用 Libxml2 分析 XML
原标题:Unable to parse XML using Libxml2 in C
  • 时间:2012-05-24 18:29:42
  •  标签:
  • c
  • xml
  • libxml2

我新到 libxml2, 并以一个例子开始, 我不明白为什么我的样本代码不读一些标签。 我有我的 XML 文件 。

<ACCOUNTS>
<ACCOUNT NO="123">
<STATE>GA</STATE>
<NAME>John</NAME>
</ACCOUNT>
<ACCOUNT NO="123">
<STATE>GA</STATE>
<NAME>Burgess</NAME>
</ACCOUNT>
</ACCOUNTS>

这是我的样本代码:

void getReference (xmlDocPtr doc, xmlNodePtr cur) {
    xmlChar *uri;
    xmlChar *value;
    cur = cur->xmlChildrenNode;
    while (cur != NULL) {
        if ((!xmlStrcmp(cur->name, (const xmlChar *)"ACCOUNT"))) {
            uri = xmlGetProp(cur,(const xmlChar*) "NO");
            printf("uri: %s
", uri);
            xmlFree(uri);
        }
        cur = cur->next;
    }
    return;
}

当我调试我注意到它第一次进入 ACCOOUNT 标签,然后获得该值,然后转到下一个ACCOOUNT 标签,忽略国家标签和 NAME 标签。这个程序有什么错? 这是正确的方法吗?

最佳回答

首先,我不是“强度” libxml2

如果你这样看,它可能更容易理解:

<ACCOUNTS>
  <ACCOUNT NO="123">
    <STATE>GA</STATE>
    <NAME>John</NAME>
  </ACCOUNT>
  <ACCOUNT NO="123">
    <STATE>GA</STATE>
    <NAME>Burgess</NAME>
  </ACCOUNT>
</ACCOUNTS>

可以看到,节点 < code> state 和 name 在节点 < code> account 下。 因此,您不能去下一个节点,而是必须从每个节点下的所有儿童节点中跳过。

基本上(作为一个简单的补丁或快速解决方案),如果在语句中,您必须用这个创建嵌套:

subnode = cur->xmlChildrenNode;
while (subnode != NULL) {
    if ((!xmlStrcmp(subnode->name, (const xmlChar *)"STATE"))) {
        // more things...
    }
}

希望这能帮上忙

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