1. 介绍
1）DOM(JAXP Crimson解析器)
DOM是用与平台和语言无关的方式表示XML文档的官方W3C标准。DOM是以层次结构组织的节点或信息片断的集合。这个层次结构允许开发人员在树中寻找特定信息。分析该结构通常需要加载整个文档和构造层次结构，然后才能做任何工作。由于它是基于信息层次的，因而DOM被认为是基于树或基于对象的。DOM以及广义的基于树的处理具有几个优点。首先，由于树在内存中是持久的，因此可以修改它以便应用程序能对数据和结构作出更改。它还可以在任何时候在树中上下导航，而不是像SAX那样是一次性的处理。DOM使用起来也要简单得多。
2）SAX
SAX处理的优点非常类似于流媒体的优点。分析能够立即开始，而不是等待所有的数据被处理。而且，由于应用程序只是在读取数据时检查数据，因此不需要将数据存储在内存中。这对于大型文档来说是个巨大的优点。事实上，应用程序甚至不必解析整个文档；它可以在某个条件得到满足时停止解析。一般来说，SAX还比它的替代者DOM快许多。
选择DOM还是选择SAX？ 对于需要自己编写代码来处理XML文档的开发人员来说， 选择DOM还是SAX解析模型是一个非常重要的设计决策。 DOM采用建立树形结构的方式访问XML文档，而SAX采用的事件模型。
DOM解析器把XML文档转化为一个包含其内容的树，并可以对树进行遍历。用DOM解析模型的优点是编程容易，开发人员只需要调用建树的指令，然后利用navigation APIs访问所需的树节点来完成任务。可以很容易的添加和修改树中的元素。然而由于使用DOM解析器的时候需要处理整个XML文档，所以对性能和内存的要求比较高，尤其是遇到很大的XML文件的时候。由于它的遍历能力，DOM解析器常用于XML文档需要频繁的改变的服务中。
SAX解析器采用了基于事件的模型，它在解析XML文档的时候可以触发一系列的事件，当发现给定的tag的时候，它可以激活一个回调方法，告诉该方法制定的标签已经找到。SAX对内存的要求通常会比较低，因为它让开发人员自己来决定所要处理的tag。特别是当开发人员只需要处理文档中所包含的部分数据时，SAX这种扩展能力得到了更好的体现。但用SAX解析器的时候编码工作会比较困难，而且很难同时访问同一个文档中的多处不同数据。
3）JDOM http://www.jdom.org/
JDOM的目的是成为Java特定文档模型，它简化与XML的交互并且比使用DOM实现更快。由于是第一个Java特定模型，JDOM一直得到大力推广和促进。正在考虑通过“Java规范请求JSR-102”将它最终用作“Java标准扩展”。从2000年初就已经开始了JDOM开发。
JDOM与DOM主要有两方面不同。首先，JDOM仅使用具体类而不使用接口。这在某些方面简化了API，但是也限制了灵活性。第二，API大量使用了Collections类，简化了那些已经熟悉这些类的Java开发者的使用。
JDOM文档声明其目的是“使用20%(或更少)的精力解决80%(或更多)Java/XML问题”(根据学习曲线假定为20%)。JDOM对于大多数Java/XML应用程序来说当然是有用的，并且大多数开发者发现API比DOM容易理解得多。JDOM还包括对程序行为的相当广泛检查以防止用户做任何在XML中无意义的事。然而，它仍需要您充分理解XML以便做一些超出基本的工作(或者甚至理解某些情况下的错误)。这也许是比学习DOM或JDOM接口都更有意义的工作。
JDOM自身不包含解析器。它通常使用SAX2解析器来解析和验证输入XML文档(尽管它还可以将以前构造的DOM表示作为输入)。它包含一些转换器以将JDOM表示输出成SAX2事件流、DOM模型或XML文本文档。JDOM是在Apache许可证变体下发布的开放源码。
4）DOM4J http://dom4j.sourceforge.net/
虽然DOM4J代表了完全独立的开发结果，但最初，它是JDOM的一种智能分支。它合并了许多超出基本XML文档表示的功能，包括集成的XPath支持、XML
Schema支持以及用于大文档或流化文档的基于事件的处理。它还提供了构建文档表示的选项，它通过DOM4J
API和标准DOM接口具有并行访问功能。从2000下半年开始，它就一直处于开发之中。
为支持所有这些功能，DOM4J使用接口和抽象基本类方法。DOM4J大量使用了API中的Collections类，但是在许多情况下，它还提供一些替代方法以允许更好的性能或更直接的编码方法。直接好处是，虽然DOM4J付出了更复杂的API的代价，但是它提供了比JDOM大得多的灵活性。
在添加灵活性、XPath集成和对大文档处理的目标时，DOM4J的目标与JDOM是一样的：针对Java开发者的易用性和直观操作。它还致力于成为比JDOM更完整的解决方案，实现在本质上处理所有Java/XML问题的目标。在完成该目标时，它比JDOM更少强调防止不正确的应用程序行为。
DOM4J是一个非常非常优秀的Java XML API，具有性能优异、功能强大和极端易用使用的特点，同时它也是一个开放源代码的软件。如今你可以看到越来越多的Java软件都在使用DOM4J来读写XML，特别值得一提的是连Sun的JAXM也在用DOM4J。
================================================华丽的分割线=====================================================================
我们在使用freeswitch的时候，在话单保存的时候，由于话单的格式是XML，话单的格式如下：
cdr:<?xml version="1.0"?>
<cdr core-uuid="fbb338f0-4319-41b0-8b15-7347da3ef948" switchname="chen-PC">
<channel_data>
<state>CS_REPORTING</state>
<direction>inbound</direction>
<state_number>11</state_number>
<flags>0=1;1=1;3=1;37=1;38=1;40=1;48=1;53=1;74=1;94=1;111=1;112=1;121=1</flags>
<caps>1=1;2=1;3=1;4=1;5=1;6=1</caps>
</channel_data>
<call-stats>
<audio>
<inbound>
<raw_bytes>67424</raw_bytes>
<media_bytes>67424</media_bytes>
<packet_count>392</packet_count>
<media_packet_count>392</media_packet_count>
<skip_packet_count>6</skip_packet_count>
<jitter_packet_count>0</jitter_packet_count>
<dtmf_packet_count>0</dtmf_packet_count>
<cng_packet_count>0</cng_packet_count>
<flush_packet_count>0</flush_packet_count>
<largest_jb_size>0</largest_jb_size>
<jitter_min_variance>0.00</jitter_min_variance>
<jitter_max_variance>0.00</jitter_max_variance>
<jitter_loss_rate>0.00</jitter_loss_rate>
<jitter_burst_rate>0.00</jitter_burst_rate>
<mean_interval>20.00</mean_interval>
<flaw_total>0</flaw_total>
<quality_percentage>100.00</quality_percentage>
<mos>4.50</mos>
</inbound>
<outbound>
<raw_bytes>65876</raw_bytes>
<media_bytes>65876</media_bytes>
<packet_count>383</packet_count>
<media_packet_count>383</media_packet_count>
<skip_packet_count>0</skip_packet_count>
<dtmf_packet_count>0</dtmf_packet_count>
<cng_packet_count>0</cng_packet_count>
<rtcp_packet_count>0</rtcp_packet_count>
<rtcp_octet_count>0</rtcp_octet_count>
</outbound>
</audio>
</call-stats>
<variables>
<direction>inbound</direction>
<uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e</uuid>
<session_id>11</session_id>
<sip_from_user>1005</sip_from_user>
<sip_from_port>3060</sip_from_port>
<sip_from_uri>1005%40192.168.2.231%3A3060</sip_from_uri>
<sip_from_host>192.168.2.231</sip_from_host>
<video_media_flow>sendrecv</video_media_flow>
<channel_name>sofia/internal/1005%40192.168.2.231%3A3060</channel_name>
<sip_call_id>YmQ0MWYxZTQ5NTE5MTJhZTVhODExMmIyMjViZTk0ZDA.</sip_call_id>
<ep_codec_string>CORE_PCM_MODULE.PCMU%408000h%4020i%4064000b,CORE_PCM_MODULE.PCMA%408000h%4020i%4064000b</ep_codec_string>
<sip_local_network_addr>36.7.69.235</sip_local_network_addr>
<sip_network_ip>192.168.2.231</sip_network_ip>
<sip_network_port>6446</sip_network_port>
<sip_received_ip>192.168.2.231</sip_received_ip>
<sip_received_port>6446</sip_received_port>
<sip_via_protocol>udp</sip_via_protocol>
<sip_authorized>true</sip_authorized>
<Event-Name>REQUEST_PARAMS</Event-Name>
<Core-UUID>fbb338f0-4319-41b0-8b15-7347da3ef948</Core-UUID>
<FreeSWITCH-Hostname>chen-PC</FreeSWITCH-Hostname>
<FreeSWITCH-Switchname>chen-PC</FreeSWITCH-Switchname>
<FreeSWITCH-IPv4>192.168.2.231</FreeSWITCH-IPv4>
<FreeSWITCH-IPv6>%3A%3A1</FreeSWITCH-IPv6>
<Event-Date-Local>2017-12-14%2017%3A30%3A31</Event-Date-Local>
<Event-Date-GMT>Thu,%2014%20Dec%202017%2009%3A30%3A31%20GMT</Event-Date-GMT>
<Event-Date-Timestamp>1513243831009250</Event-Date-Timestamp>
<Event-Calling-File>sofia.c</Event-Calling-File>
<Event-Calling-Function>sofia_handle_sip_i_invite</Event-Calling-Function>
<Event-Calling-Line-Number>10057</Event-Calling-Line-Number>
<Event-Sequence>1074</Event-Sequence>
<sip_number_alias>1005</sip_number_alias>
<sip_auth_username>1005</sip_auth_username>
<sip_auth_realm>192.168.2.231</sip_auth_realm>
<number_alias>1005</number_alias>
<requested_user_name>1005</requested_user_name>
<requested_domain_name>172.29.50.6</requested_domain_name>
<record_stereo>true</record_stereo>
<default_gateway>example.com</default_gateway>
<default_areacode>918</default_areacode>
<transfer_fallback_extension>operator</transfer_fallback_extension>
<toll_allow>domestic,international,local</toll_allow>
<accountcode>1005</accountcode>
<user_context>default</user_context>
<effective_caller_id_name>Extension%201005</effective_caller_id_name>
<effective_caller_id_number>1005</effective_caller_id_number>
<outbound_caller_id_name>FreeSWITCH</outbound_caller_id_name>
<outbound_caller_id_number>0000000000</outbound_caller_id_number>
<callgroup>techsupport</callgroup>
<user_name>1005</user_name>
<domain_name>172.29.50.6</domain_name>
<sip_from_user_stripped>1005</sip_from_user_stripped>
<sip_from_tag>847b4f16</sip_from_tag>
<sofia_profile_name>internal</sofia_profile_name>
<recovery_profile_name>internal</recovery_profile_name>
<sip_full_via>SIP/2.0/UDP%20192.168.2.231%3A6446%3Bbranch%3Dz9hG4bK-d87543-9107f1407d4be545-1--d87543-%3Brport%3D6446</sip_full_via>
<sip_from_display>1005</sip_from_display>
<sip_full_from>%221005%22%20%3Csip%3A1005%40192.168.2.231%3A3060%3E%3Btag%3D847b4f16</sip_full_from>
<sip_to_display>152****0699</sip_to_display>
<sip_full_to>%22152****0699%22%20%3Csip%3A152****0699%40192.168.2.231%3A3060%3E</sip_full_to>
<sip_allow>INVITE,%20ACK,%20CANCEL,%20OPTIONS,%20BYE,%20REFER,%20NOTIFY,%20MESSAGE,%20SUBSCRIBE,%20INFO</sip_allow>
<sip_req_user>152****0699</sip_req_user>
<sip_req_port>3060</sip_req_port>
<sip_req_uri>152****0699%40192.168.2.231%3A3060</sip_req_uri>
<sip_req_host>192.168.2.231</sip_req_host>
<sip_to_user>152****0699</sip_to_user>
<sip_to_port>3060</sip_to_port>
<sip_to_uri>152****0699%40192.168.2.231%3A3060</sip_to_uri>
<sip_to_host>192.168.2.231</sip_to_host>
<sip_contact_user>1005</sip_contact_user>
<sip_contact_port>6446</sip_contact_port>
<sip_contact_uri>1005%40192.168.2.231%3A6446</sip_contact_uri>
<sip_contact_host>192.168.2.231</sip_contact_host>
<sip_user_agent>eyeBeam%20release%201011d%20stamp%2040820</sip_user_agent>
<sip_via_host>192.168.2.231</sip_via_host>
<sip_via_port>6446</sip_via_port>
<sip_via_rport>6446</sip_via_rport>
<max_forwards>70</max_forwards>
<presence_id>1005%40192.168.2.231</presence_id>
<switch_r_sdp>v%3D0%0D%0Ao%3D-%205%202%20IN%20IP4%20192.168.2.231%0D%0As%3DCounterPath%20eyeBeam%201.5%0D%0Ac%3DIN%20IP4%20192.168.2.231%0D%0At%3D0%200%0D%0Am%3Daudio%2022424%20RTP/AVP%200%208%2018%20101%0D%0Aa%3Drtpmap%3A18%20G729/8000%0D%0Aa%3Dfmtp%3A18%20annexb%3Dno%0D%0Aa%3Drtpmap%3A101%20telephone-event/8000%0D%0Aa%3Dfmtp%3A101%200-15%0D%0Aa%3Dalt%3A1%203%20%3A%20zhhREpPi%20r6s0Zvi9%20192.168.2.231%2022424%0D%0Aa%3Dalt%3A2%202%20%3A%20g2vjg3DX%20Ga7%2BbVla%20192.168.18.1%2022424%0D%0Aa%3Dalt%3A3%201%20%3A%20IzxAhjnF%206wdMOPT9%20192.168.199.1%2022424%0D%0Aa%3Dx-rtp-session-id%3A6F56FE94725A4560818F9EA8D51E50DC%0D%0A</switch_r_sdp>
<DP_MATCH>152****0699</DP_MATCH>
<DP_MATCH>152****0699</DP_MATCH>
<call_uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e</call_uuid>
<hangup_after_bridge>true</hangup_after_bridge>
<my_call_uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</my_call_uuid>
<current_application_data>%7Borigination_uuid%3D6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg,absolute_codec_string%3Dpcma,origination_caller_id_number%3D65222895,origination_caller_id_name%3D65222895,effective_caller_id_number%3D65222895,effective_caller_id_name%3D65222895%7Dsofia/gateway/MRWG/152****0699</current_application_data>
<current_application>bridge</current_application>
<originated_legs>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg%3BOutbound%20Call%3B152****0699</originated_legs>
<switch_m_sdp>v%3D0%0D%0Ao%3DFreeSWITCH%201513195822%201513195823%20IN%20IP4%2036.33.216.174%0D%0As%3DFreeSWITCH%0D%0Ac%3DIN%20IP4%2036.33.216.174%0D%0At%3D0%200%0D%0Am%3Daudio%2048016%20RTP/AVP%208%20101%0D%0Aa%3Drtpmap%3A8%20PCMA/8000%0D%0Aa%3Drtpmap%3A101%20telephone-event/8000%0D%0Aa%3Dfmtp%3A101%200-16%0D%0Aa%3Dptime%3A20%0D%0A</switch_m_sdp>
<audio_media_flow>sendrecv</audio_media_flow>
<rtp_use_codec_string>ilbc,OPUS,G722,PCMU,PCMA,VP8</rtp_use_codec_string>
<rtp_audio_recv_pt>0</rtp_audio_recv_pt>
<rtp_use_codec_name>PCMU</rtp_use_codec_name>
<rtp_use_codec_rate>8000</rtp_use_codec_rate>
<rtp_use_codec_ptime>20</rtp_use_codec_ptime>
<rtp_use_codec_channels>1</rtp_use_codec_channels>
<rtp_last_audio_codec_string>PCMU%408000h%4020i%401c</rtp_last_audio_codec_string>
<read_codec>PCMU</read_codec>
<original_read_codec>PCMU</original_read_codec>
<read_rate>8000</read_rate>
<original_read_rate>8000</original_read_rate>
<write_codec>PCMU</write_codec>
<write_rate>8000</write_rate>
<dtmf_type>rfc2833</dtmf_type>
<local_media_ip>192.168.2.231</local_media_ip>
<local_media_port>20114</local_media_port>
<advertised_media_ip>192.168.2.231</advertised_media_ip>
<rtp_use_timer_name>soft</rtp_use_timer_name>
<rtp_use_pt>0</rtp_use_pt>
<rtp_use_ssrc>1605568662</rtp_use_ssrc>
<rtp_2833_send_payload>101</rtp_2833_send_payload>
<rtp_2833_recv_payload>101</rtp_2833_recv_payload>
<remote_media_ip>192.168.2.231</remote_media_ip>
<remote_media_port>22424</remote_media_port>
<originate_disposition>SUCCESS</originate_disposition>
<DIALSTATUS>SUCCESS</DIALSTATUS>
<originate_causes>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg%3BNONE</originate_causes>
<last_bridge_to>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</last_bridge_to>
<bridge_channel>sofia/external/152****0699</bridge_channel>
<bridge_uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</bridge_uuid>
<signal_bond>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</signal_bond>
<rtp_local_sdp_str>v%3D0%0D%0Ao%3DFreeSWITCH%201513223724%201513223726%20IN%20IP4%20192.168.2.231%0D%0As%3DFreeSWITCH%0D%0Ac%3DIN%20IP4%20192.168.2.231%0D%0At%3D0%200%0D%0Am%3Daudio%2020114%20RTP/AVP%200%20101%0D%0Aa%3Drtpmap%3A0%20PCMU/8000%0D%0Aa%3Drtpmap%3A101%20telephone-event/8000%0D%0Aa%3Dfmtp%3A101%200-16%0D%0Aa%3Dptime%3A20%0D%0Aa%3Dsendrecv%0D%0A</rtp_local_sdp_str>
<endpoint_disposition>ANSWER</endpoint_disposition>
<sip_reason>Q.850%3Bcause%3D16%3Btext%3D%22NORMAL_CLEARING%22</sip_reason>
<sip_hangup_phrase>OK</sip_hangup_phrase>
<last_bridge_hangup_cause>NORMAL_CLEARING</last_bridge_hangup_cause>
<last_bridge_proto_specific_hangup_cause>sip%3A200</last_bridge_proto_specific_hangup_cause>
<bridge_hangup_cause>NORMAL_CLEARING</bridge_hangup_cause>
<hangup_cause>NORMAL_CLEARING</hangup_cause>
<hangup_cause_q850>16</hangup_cause_q850>
<digits_dialed>none</digits_dialed>
<start_stamp>2017-12-14%2017%3A30%3A31</start_stamp>
<profile_start_stamp>2017-12-14%2017%3A30%3A31</profile_start_stamp>
<answer_stamp>2017-12-14%2017%3A30%3A43</answer_stamp>
<bridge_stamp>2017-12-14%2017%3A30%3A38</bridge_stamp>
<progress_media_stamp>2017-12-14%2017%3A30%3A38</progress_media_stamp>
<end_stamp>2017-12-14%2017%3A30%3A46</end_stamp>
<start_epoch>1513243831</start_epoch>
<start_uepoch>1513243831009250</start_uepoch>
<profile_start_epoch>1513243831</profile_start_epoch>
<profile_start_uepoch>1513243831009250</profile_start_uepoch>
<answer_epoch>1513243843</answer_epoch>
<answer_uepoch>1513243843549250</answer_uepoch>
<bridge_epoch>1513243838</bridge_epoch>
<bridge_uepoch>1513243838979250</bridge_uepoch>
<last_hold_epoch>0</last_hold_epoch>
<last_hold_uepoch>0</last_hold_uepoch>
<hold_accum_seconds>0</hold_accum_seconds>
<hold_accum_usec>0</hold_accum_usec>
<hold_accum_ms>0</hold_accum_ms>
<resurrect_epoch>0</resurrect_epoch>
<resurrect_uepoch>0</resurrect_uepoch>
<progress_epoch>0</progress_epoch>
<progress_uepoch>0</progress_uepoch>
<progress_media_epoch>1513243838</progress_media_epoch>
<progress_media_uepoch>1513243838979250</progress_media_uepoch>
<end_epoch>1513243846</end_epoch>
<end_uepoch>1513243846889250</end_uepoch>
<last_app>bridge</last_app>
<last_arg>%7Borigination_uuid%3D6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg,absolute_codec_string%3Dpcma,origination_caller_id_number%3D65222895,origination_caller_id_name%3D65222895,effective_caller_id_number%3D65222895,effective_caller_id_name%3D65222895%7Dsofia/gateway/MRWG/152****0699</last_arg>
<caller_id>%221005%22%20%3C1005%3E</caller_id>
<duration>15</duration>
<billsec>3</billsec>
<progresssec>0</progresssec>
<answersec>12</answersec>
<waitsec>7</waitsec>
<progress_mediasec>7</progress_mediasec>
<flow_billsec>15</flow_billsec>
<mduration>15880</mduration>
<billmsec>3340</billmsec>
<progressmsec>0</progressmsec>
<answermsec>12540</answermsec>
<waitmsec>7970</waitmsec>
<progress_mediamsec>7970</progress_mediamsec>
<flow_billmsec>15880</flow_billmsec>
<uduration>15880000</uduration>
<billusec>3340000</billusec>
<progressusec>0</progressusec>
<answerusec>12540000</answerusec>
<waitusec>7970000</waitusec>
<progress_mediausec>7970000</progress_mediausec>
<flow_billusec>15880000</flow_billusec>
<sip_hangup_disposition>send_bye</sip_hangup_disposition>
<rtp_audio_in_raw_bytes>67424</rtp_audio_in_raw_bytes>
<rtp_audio_in_media_bytes>67424</rtp_audio_in_media_bytes>
<rtp_audio_in_packet_count>392</rtp_audio_in_packet_count>
<rtp_audio_in_media_packet_count>392</rtp_audio_in_media_packet_count>
<rtp_audio_in_skip_packet_count>6</rtp_audio_in_skip_packet_count>
<rtp_audio_in_jitter_packet_count>0</rtp_audio_in_jitter_packet_count>
<rtp_audio_in_dtmf_packet_count>0</rtp_audio_in_dtmf_packet_count>
<rtp_audio_in_cng_packet_count>0</rtp_audio_in_cng_packet_count>
<rtp_audio_in_flush_packet_count>0</rtp_audio_in_flush_packet_count>
<rtp_audio_in_largest_jb_size>0</rtp_audio_in_largest_jb_size>
<rtp_audio_in_jitter_min_variance>0.00</rtp_audio_in_jitter_min_variance>
<rtp_audio_in_jitter_max_variance>0.00</rtp_audio_in_jitter_max_variance>
<rtp_audio_in_jitter_loss_rate>0.00</rtp_audio_in_jitter_loss_rate>
<rtp_audio_in_jitter_burst_rate>0.00</rtp_audio_in_jitter_burst_rate>
<rtp_audio_in_mean_interval>20.00</rtp_audio_in_mean_interval>
<rtp_audio_in_flaw_total>0</rtp_audio_in_flaw_total>
<rtp_audio_in_quality_percentage>100.00</rtp_audio_in_quality_percentage>
<rtp_audio_in_mos>4.50</rtp_audio_in_mos>
<rtp_audio_out_raw_bytes>65876</rtp_audio_out_raw_bytes>
<rtp_audio_out_media_bytes>65876</rtp_audio_out_media_bytes>
<rtp_audio_out_packet_count>383</rtp_audio_out_packet_count>
<rtp_audio_out_media_packet_count>383</rtp_audio_out_media_packet_count>
<rtp_audio_out_skip_packet_count>0</rtp_audio_out_skip_packet_count>
<rtp_audio_out_dtmf_packet_count>0</rtp_audio_out_dtmf_packet_count>
<rtp_audio_out_cng_packet_count>0</rtp_audio_out_cng_packet_count>
<rtp_audio_rtcp_packet_count>0</rtp_audio_rtcp_packet_count>
<rtp_audio_rtcp_octet_count>0</rtp_audio_rtcp_octet_count>
</variables>
<app_log>
<application app_name="set" app_data="hangup_after_bridge=true" app_stamp="1513243831019750"></application>
<application app_name="set" app_data="my_call_uuid=6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg" app_stamp="1513243831019750"></application>
<application app_name="log" app_data="INFO my_call_uuid is: iLBC...iLBC...iLBC...iLBC... 1005 , myPrefix is: , ON: " app_stamp="1513243831019750"></application>
<application app_name="bridge" app_data="{origination_uuid=6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg,absolute_codec_string=pcma,origination_caller_id_number=65222895,origination_caller_id_name=65222895,effective_caller_id_number=65222895,effective_caller_id_name=65222895}sofia/gateway/MRWG/152****0699" app_stamp="1513243831020250"></application>
</app_log>
<callflow dialplan="XML" unique-id="d7ea3c30-cc0d-4e48-b3cf-09ce3ae70332" profile_index="1">
<extension name="call mobile extension" number="152****0699" current_app="hangup">
<application app_name="set" app_data="hangup_after_bridge=true"></application>
<application app_name="set" app_data="my_call_uuid=${uuid}-bleg"></application>
<application app_name="log" app_data="INFO my_call_uuid is: iLBC...iLBC...iLBC...iLBC... ${caller_id_number} , myPrefix is: ${checkmobile} , ON: ${outboundNumber}"></application>
<application app_name="bridge" app_data="{origination_uuid=${my_call_uuid},absolute_codec_string=pcma,origination_caller_id_number=65222895,origination_caller_id_name=65222895,effective_caller_id_number=65222895,effective_caller_id_name=65222895}sofia/gateway/MRWG/152****0699"></application>
<application last_executed="true" app_name="hangup" app_data=""></application>
</extension>
<caller_profile>
<username>1005</username>
<dialplan>XML</dialplan>
<caller_id_name>1005</caller_id_name>
<caller_id_number>1005</caller_id_number>
<callee_id_name>Outbound Call</callee_id_name>
<callee_id_number>152****0699</callee_id_number>
<ani>1005</ani>
<aniii></aniii>
<network_addr>192.168.2.231</network_addr>
<rdnis></rdnis>
<destination_number>152****0699</destination_number>
<uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e</uuid>
<source>mod_sofia</source>
<context>default</context>
<chan_name>sofia/internal/1005@192.168.2.231:3060</chan_name>
<origination>
<origination_caller_profile>
<username>1005</username>
<dialplan>XML</dialplan>
<caller_id_name>65222895</caller_id_name>
<caller_id_number>65222895</caller_id_number>
<callee_id_name>Outbound Call</callee_id_name>
<callee_id_number>152****0699</callee_id_number>
<ani>1005</ani>
<aniii></aniii>
<network_addr>192.168.2.231</network_addr>
<rdnis></rdnis>
<destination_number>152****0699</destination_number>
<uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</uuid>
<source>mod_sofia</source>
<context>default</context>
<chan_name>sofia/external/152****0699</chan_name>
</origination_caller_profile>
</origination>
<originatee>
<originatee_caller_profile>
<username>1005</username>
<dialplan>XML</dialplan>
<caller_id_name>65222895</caller_id_name>
<caller_id_number>65222895</caller_id_number>
<callee_id_name>Outbound Call</callee_id_name>
<callee_id_number>152****0699</callee_id_number>
<ani>1005</ani>
<aniii></aniii>
<network_addr>36.33.216.174</network_addr>
<rdnis></rdnis>
<destination_number>152****0699</destination_number>
<uuid>6b6e935c-fb2d-4af5-9d9e-c48ff512e37e-bleg</uuid>
<source>mod_sofia</source>
<context>default</context>
<chan_name>sofia/external/152****0699</chan_name>
</originatee_caller_profile>
</originatee>
</caller_profile>
<times>
<created_time>1513243831009250</created_time>
<profile_created_time>1513243831009250</profile_created_time>
<progress_time>0</progress_time>
<progress_media_time>1513243838979250</progress_media_time>
<answered_time>1513243843549250</answered_time>
<bridged_time>1513243838979250</bridged_time>
<last_hold_time>0</last_hold_time>
<hold_accum_time>0</hold_accum_time>
<hangup_time>1513243846889250</hangup_time>
<resurrect_time>0</resurrect_time>
<transfer_time>0</transfer_time>
</times>
</callflow>
</cdr>
为了得到我们需要的字段，包括主叫，被叫，通话时间，接通时间，应答时间等信息。我们从XML格式的文件中取出相应的字段值。
后台处理如下：
/***
* 解析xml话单
***/
public void analysis(String fileContent) throws Exception {
SAXReader reader = new SAXReader();
InputStream input = new ByteArrayInputStream(fileContent.getBytes());
Document document = reader.read(input);
Element root = document.getRootElement();
List<Element> childElements = root.elements();
for (Element child : childElements) {
System.out.println(child.getName()+"===============");
if (child.getName() == "variables") {
List<Element> varElements = child.elements();
for (Element var : varElements) {
String elementName = var.getName().toLowerCase().trim();
switch (elementName) {
case "uuid":
uuid = var.getTextTrim();
break;
case "sip_auth_username":
sip_auth_username = var.getTextTrim();
break;
// 自定义变量
case "my_opnum_name":
my_opnum_name = var.getTextTrim();
break;
case "my_extnum_name":
my_extnum_name = var.getTextTrim();
break;
case "my_caller_name":
my_caller_name = var.getTextTrim();
break;
case "my_callee_name":
my_callee_name = var.getTextTrim();
break;
case "my_answer_stamp":
my_answer_stamp = var.getTextTrim();
break;
case "start_stamp":
start_stamp = var.getTextTrim();
break;
case "answer_stamp":
answer_stamp = var.getTextTrim();
break;
case "end_stamp":
end_stamp = var.getTextTrim();
break;
case "auto_batchcall_flag":
auto_batchcall_flag = var.getTextTrim();
break;
case "not_save_record_flag":
not_save_record_flag = var.getTextTrim();
break;
case "callspy_flag":
callspy_flag = var.getTextTrim();
break;
case "last_bridge_hangup_cause":
hangup_cause += var.getTextTrim();
break;
}
}
}
if (child.getName() == "callflow") {
List<Element> varElements = child.elements();
for (Element varEle : varElements) {
if (varEle.getName() == "caller_profile") {
List<Element> varElementsSub = varEle.elements();
for (Element var : varElementsSub) {
String elementName = var.getName().toLowerCase().trim();
switch (elementName) {
case "caller_id_number":
caller_id_number = var.getTextTrim();
break;
case "destination_number":
destination_number = var.getTextTrim();
break;
}
}
}
}
}
}
}
解析后将得到的值赋到相应的变量中。
==========================下面是一个简单的测试=================
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.Test;
public class TestCdrXml {
@Test
public void test1() throws DocumentException{
String cdrxml = "<?xml version="1.0" encoding="UTF-8"?> "
+"<student>"
+"<name>张三</name>"
+ "<age>18</age>"
+ "</student>";
SAXReader reader = new SAXReader();
InputStream input = new ByteArrayInputStream(cdrxml.getBytes());
Document document = reader.read(input);
Element root = document.getRootElement();
List<Element> childElements = root.elements();
for(Element ele:childElements){
System.out.println(ele.getName()+":"+ele.getTextTrim());
}
}
}
运行后结果如下：
name:张三
age:18