使用dom4j修改XML格式的字符串

<data>    <ryzd>        <record>            <western>                <record>                    <diagnoses>                        <record>                            <indentation>0</indentation>                            <content>颈后纵韧带骨化</content>                            <allContent>颈后纵韧带骨化 2018-10-16 管理员</allContent>                            <allContents>颈后纵韧带骨化 2018-10-16 管理员</allContents>                            <diagName>颈后纵韧带骨化</diagName>                            <indentTimes>1</indentTimes>                            <diagAllTime>20181016150508</diagAllTime>                            <outCome />                            <content2>                                <record>                                    <content>颈后纵韧带骨化</content>                                </record>                            </content2>                            <outCome2>                                <record>                                    <content />                                </record>                            </outCome2>                        </record>                    </diagnoses>                </record>            </western>            <signature_ystime />            <signature_ysname />            <signature_ystitle>主任医师</signature_ystitle>            <creator_name />            <signer>管理员</signer>            <signature_date>2018-10-16</signature_date>            <signature_time>2018-10-16 15:05</signature_time>            <signature_times>2018年10月16日</signature_times>            <signerImage />            <signature_alltime>20181016150508</signature_alltime>            <signature_timess>2018年10月16日 15点05分</signature_timess>            <diag_sn_list>15396735088300954413</diag_sn_list>        </record>    </ryzd>    <cyzd>        <record>            <western>                <record>                    <diagnoses>                        <record>                            <indentation>0</indentation>                            <content>颈后纵韧带骨化</content>                            <allContent>颈后纵韧带骨化 2018-10-17 管理员</allContent>                            <allContents>颈后纵韧带骨化 2018-10-17 管理员</allContents>                            <diagName>颈后纵韧带骨化</diagName>                            <indentTimes>1</indentTimes>                            <diagAllTime>20181017144706</diagAllTime>                            <outCome />                            <content2>                                <record>                                    <content>颈后纵韧带骨化</content>                                </record>                            </content2>                            <outCome2>                                <record>                                    <content />                                </record>                            </outCome2>                        </record>                        <record>                            <indentation>0</indentation>                            <content>胸椎骨折T11/T12</content>                            <allContent>胸椎骨折T11/T12 2018-10-17 管理员</allContent>                            <allContents>胸椎骨折T11/T12 2018-10-17 管理员</allContents>                            <diagName>胸椎骨折T11/T12</diagName>                            <indentTimes>1</indentTimes>                            <diagAllTime>20181017144719</diagAllTime>                            <outCome>好转</outCome>                            <content2>                                <record>                                    <content>胸椎骨折T11/T12</content>                                </record>                            </content2>                            <outCome2>                                <record>                                    <content>好转</content>                                </record>                            </outCome2>                        </record>                    </diagnoses>                </record>            </western>            <signature_ystime />            <signature_ysname />            <signature_ystitle>主任医师</signature_ystitle>            <creator_name />            <signer>管理员</signer>            <signature_date>2018-10-17</signature_date>            <signature_time>2018-10-17 14:47</signature_time>            <signature_times>2018年10月17日</signature_times>            <signerImage />            <signature_alltime>20181017144706</signature_alltime>            <signature_timess>2018年10月17日 14点47分</signature_timess>            <diag_sn_list>15397588260500045136,15397588396850046153            </diag_sn_list>        </record>    </cyzd></data>

private String getDiagXml(String diagXml, String postoperativeDiagnosis){        // TODO Auto-generated method stub        try {            Document doc=DocumentHelper.parseText(diagXml);            Element root = doc.getRootElement();            Element cyzd = root.element("cyzd");            Element diagnoses = cyzd.element("record").element("western").element("record").element("diagnoses");//获取要增加节点的父节点            Element record = diagnoses.addElement("record");            Element indentation = record.addElement("indentation");            indentation.setText("0");            Element content = record.addElement("content");            content.setText(postoperativeDiagnosis);            Element diagName = record.addElement("diagName");            diagName.setText(postoperativeDiagnosis);            Element indentTimes = record.addElement("indentTimes");            indentTimes.setText("1");            String date = new java.text.SimpleDateFormat("yyyyMMddHHmmss").format(new java.util.Date()); //获取当前时间            Element diagAllTime = record.addElement("diagAllTime");            diagAllTime.setText(date);                        String newXml=doc.asXML();    //将修改后的内容组织成新的字符串            return newXml;        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return diagXml;    }