Modify the content of the specified XML tag c# Get the tag in the xml node c# xml null value tag Tencent qq xml message tag

<span><?</span><span>xml version="1.0" encoding="UTF-8"</span><span>?></span><span><</span><span>DOCUMENT</span><span>></span><span><</span><span>item</span><span>></span><span><</span><span>key</span><span>></span>记录博客是一个很好的习惯<span></</span><span>key</span><span>></span><span><</span><span>url</span><span>></span>http://www.cnblogs.com/keerdi/p/5465549.html<span></</span><span>url</span><span>></span><span><</span><span>title</span><span>></span>去除XML的空格<span></</span><span>title</span><span>></span><span><</span><span>content</span><span>></span>养成一个好习惯很重要，  这是一段有空   格的文件内容，<span></</span><span>content</span><span>></span><span><</span><span>date</span><span>></span>2016-1-12<span></</span><span>date</span><span>></span><span></</span><span>item</span><span>></span><span><</span><span>item</span><span>></span><span><</span><span>key</span><span>></span>大家一起来写博客<span></</span><span>key</span><span>></span><span><</span><span>url</span><span>></span>http://www.cnblogs.com/keerdi/p/5465549.html<span></</span><span>url</span><span>></span><span><</span><span>title</span><span>></span>写博客可以增强记忆能力<span></</span><span>title</span><span>></span><span><</span><span>content</span><span>></span>一般安 装后的linux系统都是英文的界面，网上查  了一下各种说法  都有，  我只做了如下的配  置就好了，下载个中文包，改一下i18    n就完事了，并没有那么复杂<span></</span><span>content</span><span>></span><span><</span><span>date</span><span>></span>2016-1-12<span></</span><span>date</span><span>></span><span></</span><span>item</span><span>></span><span></</span><span>DOCUMENT</span><span>></span>

<?<span>php
    </span><span>function</span><span> actionGetXml(){
        </span><span>$xmlpath</span> = 'test.xml'<span>;
        </span><span>$xml</span> = <span>new</span> DOMDocument("1.0","UTF-8"<span>);
        </span><span>$xml</span>->load(<span>$xmlpath</span><span>);
        </span><span>$root</span> = <span>$xml</span>-><span>documentElement;
        </span><span>//</span><span> 获取标签总数</span><span>$nodes</span> = <span>$root</span>->getElementsByTagName("item"<span>);
        </span><span>for</span>(<span>$i</span>=0;<span>$i</span><=<span>$nodes</span>->length;<span>$i</span>++<span>){
            </span><span>//</span><span> 指定content标签，并获取content标签内容通过delTrim()方法去除所有空格</span><span>$str</span> = <span>$xml</span>->getElementsByTagName("content")->item(<span>$i</span><span>);
            </span><span>//</span><span> $str->nodeValue = "这里是要修改的内容";</span><span>$str</span>->nodeValue = <span>$this</span>->delTrim(<span>$str</span>-><span>nodeValue);
            </span><span>$xml</span>->save("test.xml"<span>);
        }
    }

    </span><span>//</span><span>删除空格</span><span>function</span> delTrim(<span>$object</span><span>) {
        </span><span>$search</span> = <span>array</span>(" ", "　", "\t", "\n", "\r"<span>);
        </span><span>$replace</span> = <span>array</span>("", "", "", "", ""<span>);
        </span><span>return</span><span>str_replace</span>(<span>$search</span>, <span>$replace</span>, <span>$object</span><span>);
    }
</span>?>