利用jdk XML 转成 xsd 再转成 javaBean

原文地址：攻城狮不是猫

第一种方法

首先拿到xml 例如：

<status><sigar  cpu="31.2" memory="87" jvm="79" disk="70" /><jvm><memory free='98567840' total='124780544' max='1825046528'/><memorypool name='PS Eden Space' type='Heap memory' usageInit='32505856' usageCommitted='32505856' usageMax='673710080' usageUsed='2554416'/><memorypool name='PS Old Gen' type='Heap memory' usageInit='87031808' usageCommitted='87031808' usageMax='1368915968' usageUsed='18421456'/><memorypool name='PS Survivor Space' type='Heap memory' usageInit='5242880' usageCommitted='5242880' usageMax='5242880' usageUsed='5236832'/><memorypool name='Code Cache' type='Non-heap memory' usageInit='2555904' usageCommitted='8060928' usageMax='251658240' usageUsed='6854528'/><memorypool name='Compressed Class Space' type='Non-heap memory' usageInit='0' usageCommitted='2490368' usageMax='1073741824' usageUsed='2234352'/><memorypool name='Metaspace' type='Non-heap memory' usageInit='0' usageCommitted='20578304' usageMax='-1' usageUsed='19735120'/></jvm><connector name='"http-nio-8060"'><threadInfo  maxThreads="200" currentThreadCount="10" currentThreadsBusy="1" /><requestInfo  maxTime="249" processingTime="421" requestCount="3" errorCount="0" bytesReceived="0" bytesSent="23445" /><workers><worker  stage="S" requestProcessingTime="736" requestBytesSent="0" requestBytesReceived="0" remoteAddr="0:0:0:0:0:0:0:1" virtualHost="localhost" method="GET" currentUri="/manager/status" currentQueryString="XML=true" protocol="HTTP/1.1" /></workers></connector><connector name='"ajp-nio-8061"'><threadInfo  maxThreads="200" currentThreadCount="10" currentThreadsBusy="0" /><requestInfo  maxTime="0" processingTime="0" requestCount="0" errorCount="0" bytesReceived="0" bytesSent="0" /><workers></workers></connector></status>

通过：http://www.xmlforasp.net/CodeBank/System_Xml_Schema/BuildSchema/BuildXMLSchema.aspx 这个网站在线转成xsd

<?xml version="1.0" encoding="utf-16"?>
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:element name="status">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="sigar">
          <xsd:complexType>
            <xsd:attribute name="cpu" type="xsd:decimal" />
            <xsd:attribute name="memory" type="xsd:int" />
            <xsd:attribute name="jvm" type="xsd:int" />
            <xsd:attribute name="disk" type="xsd:int" />
          </xsd:complexType>
        </xsd:element>
        <xsd:element name="jvm">
          <xsd:complexType>
            <xsd:sequence>
              <xsd:element name="memory">
                <xsd:complexType>
                  <xsd:attribute name="free" type="xsd:int" />
                  <xsd:attribute name="total" type="xsd:int" />
                  <xsd:attribute name="max" type="xsd:int" />
                </xsd:complexType>
              </xsd:element>
              <xsd:element maxOccurs="unbounded" name="memorypool">
                <xsd:complexType>
                  <xsd:attribute name="name" type="xsd:string" />
                  <xsd:attribute name="type" type="xsd:string" />
                  <xsd:attribute name="usageInit" type="xsd:int" />
                  <xsd:attribute name="usageCommitted" type="xsd:int" />
                  <xsd:attribute name="usageMax" type="xsd:int" />
                  <xsd:attribute name="usageUsed" type="xsd:int" />
                </xsd:complexType>
              </xsd:element>
            </xsd:sequence>
          </xsd:complexType>
        </xsd:element>
        <xsd:element maxOccurs="unbounded" name="connector">
          <xsd:complexType>
            <xsd:sequence>
              <xsd:element name="threadInfo">
                <xsd:complexType>
                  <xsd:attribute name="maxThreads" type="xsd:int" />
                  <xsd:attribute name="currentThreadCount" type="xsd:int" />
                  <xsd:attribute name="currentThreadsBusy" type="xsd:int" />
                </xsd:complexType>
              </xsd:element>
              <xsd:element name="requestInfo">
                <xsd:complexType>
                  <xsd:attribute name="maxTime" type="xsd:int" />
                  <xsd:attribute name="processingTime" type="xsd:int" />
                  <xsd:attribute name="requestCount" type="xsd:int" />
                  <xsd:attribute name="errorCount" type="xsd:int" />
                  <xsd:attribute name="bytesReceived" type="xsd:int" />
                  <xsd:attribute name="bytesSent" type="xsd:int" />
                </xsd:complexType>
              </xsd:element>
              <xsd:element name="workers">
                <xsd:complexType>
                  <xsd:sequence>
                    <xsd:element name="worker">
                      <xsd:complexType>
                        <xsd:attribute name="stage" type="xsd:string" />
                        <xsd:attribute name="requestProcessingTime" type="xsd:int" />
                        <xsd:attribute name="requestBytesSent" type="xsd:int" />
                        <xsd:attribute name="requestBytesReceived" type="xsd:int" />
                        <xsd:attribute name="remoteAddr" type="xsd:string" />
                        <xsd:attribute name="virtualHost" type="xsd:string" />
                        <xsd:attribute name="method" type="xsd:string" />
                        <xsd:attribute name="currentUri" type="xsd:string" />
                        <xsd:attribute name="currentQueryString" type="xsd:string" />
                        <xsd:attribute name="protocol" type="xsd:string" />
                      </xsd:complexType>
                    </xsd:element>
                  </xsd:sequence>
                </xsd:complexType>
              </xsd:element>
            </xsd:sequence>
            <xsd:attribute name="name" type="xsd:string" />
          </xsd:complexType>
        </xsd:element>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

新增文件保存为 test.xsd 编码utf-16 改成utf-8

cmd 进入到文件下执行：

xjc test.xsd -p test.java

然后就可以看到生成的文件了，  就是这么的简单；

第二种方法

Jaxb

JAXB官网：http://jaxb.java.net/

API链接 ：http://jaxb.java.net/nonav/2.2.5/docs/api/

文档    ：http://jaxb.java.net/tutorial/   

1. 利用trang.jar将Xml 转换成xsd

 Trang 是一种命令行的可以XML生成XSD的工具，生成XML文件对应的XSD文件只需要3个简单的步骤：

第一步  下载Trang

从http://www.thaiopensource.com/relaxng/trang.html 上下载trang-version.zip

利用trang 生成xsd后， 之后的 动作跟上面一样；