WebService实战

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wsld中几种数据类型的处理

我们通过wsld来生成的java代码，都会把参数和返回值包装成一个类。

1）wsdl2java命令

这里写图片描述

2) 参数类中对象作为属性

在返回的参数类中，我们加上一个成员变量address，address为Address类的一个实例。我们看看wsld文件中wsdl:type标签中的表述。

<wsdl:types><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://test.chm.com/" elementFormDefault="unqualified" targetNamespace="http://test.chm.com/" version="1.0">  <xs:element name="parameterName" type="tns:paramType"/>  <xs:element name="resultName" type="tns:resultType"/>  <xs:complexType name="paramType">    <xs:sequence>      <xs:element minOccurs="0" name="name" type="xs:string"/>      <xsd:element name="address" type="tns:address"></xsd:element><!-- 关键点-->    </xs:sequence>  </xs:complexType>  <xs:complexType name="resultType">    <xs:sequence>      <xs:element minOccurs="0" name="helloResult" type="xs:string"/>    </xs:sequence>  </xs:complexType>  <xsd:complexType name="address">    <xsd:sequence>        <xsd:element name="shoolAddress" type="xsd:string"></xsd:element>        <xsd:element name="homeAddress" type="xsd:string"></xsd:element>    </xsd:sequence>  </xsd:complexType></xs:schema></wsdl:types>

再看看参数类

@XmlAccessorType(XmlAccessType.FIELD)@XmlType(name = "paramType", propOrder = {    "name",    "address"})public class ParamType {    protected String name;    @XmlElement(required = true)    protected Address address;    public String getName() {        return name;    }    public void setName(String value) {        this.name = value;    }    public Address getAddress() {        return address;    }    public void setAddress(Address value) {        this.address = value;    }}

3) 返回值类中集合作为参数

我们看一下wsld中关键部分

  <wsdl:types><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://test.chm.com/" elementFormDefault="unqualified" targetNamespace="http://test.chm.com/" version="1.0">  <xs:element name="parameterName" type="tns:paramType"/>  <xs:element name="resultName" type="tns:resultType"/>  <xs:complexType name="paramType">    <xs:sequence>      <xs:element minOccurs="0" name="name" type="xs:string"/>    </xs:sequence>  </xs:complexType>  <xs:complexType name="resultType">    <xs:sequence>      <xs:element minOccurs="0" name="helloResult" type="xs:string"/>      <xsd:element name="addrList" type="tns:addr" minOccurs="0" maxOccurs="unbounded"></xsd:element>    </xs:sequence> <!-- 关键点 -->  </xs:complexType>  <xsd:complexType name="addr">    <xsd:sequence>        <xsd:element name="shoolAddress" type="xsd:string"></xsd:element>        <xsd:element name="homeAddress" type="xsd:string"></xsd:element>    </xsd:sequence>  </xsd:complexType></xs:schema>  </wsdl:types>

对应生成的返回类

@XmlAccessorType(XmlAccessType.FIELD)@XmlType(name = "resultType", propOrder = {    "helloResult",    "addrList"})public class ResultType {    protected String helloResult;    protected List<Addr> addrList;    public String getHelloResult() {        return helloResult;    }    public void setHelloResult(String value) {        this.helloResult = value;    }    public List<Addr> getAddrList() {        if (addrList == null) {            addrList = new ArrayList<Addr>();        }        return this.addrList;    }}

4) 参数类中枚举类型的属性

我们看一下wsld中关键代码部分

<wsdl:types><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://test.chm.com/" elementFormDefault="unqualified" targetNamespace="http://test.chm.com/" version="1.0">  <xs:element name="parameterName" type="tns:paramType"/>  <xs:element name="resultName" type="tns:resultType"/>  <xs:complexType name="paramType">    <xs:sequence>      <xs:element minOccurs="0" name="name" type="xs:string"/>      <xsd:element name="grade"  type="tns:grade"></xsd:element> <!-- 一个枚举类型的成员变量 -->    </xs:sequence>  </xs:complexType>  <xs:complexType name="resultType">    <xs:sequence>      <xs:element minOccurs="0" name="helloResult" type="xs:string"/>    </xs:sequence>  </xs:complexType> <xsd:simpleType name="grade"> <!-- 声明枚举类型 -->    <xsd:restriction base="xsd:string">        <xsd:enumeration value="excellent"></xsd:enumeration>        <xsd:enumeration value="medium"></xsd:enumeration>        <xsd:enumeration value="pass"></xsd:enumeration>    </xsd:restriction> </xsd:simpleType></xs:schema></wsdl:types>

5) 返回值为空

wsld中空类型的表示

<xsd:complexType>    <xsd:sequence/></xsd:complexType>

6)文件上传

在wsld中如何表示一个文件的上传？用字节数组，然后就是IO的操作了

  <xs:complexType name="paramType">    <xs:sequence>      <xs:element minOccurs="0" name="name" type="xs:string"/>      <xsd:element name="file" type="xsd:base64Binary"></xsd:element> <!-- 关键点 -->    </xs:sequence>  </xs:complexType>

对应生成的java代码

@XmlAccessorType(XmlAccessType.FIELD)@XmlType(name = "paramType", propOrder = {    "name",    "file"})public class ParamType {    protected String name;    @XmlElement(required = true)    protected byte[] file;    public String getName() {        return name;    }    public void setName(String value) {        this.name = value;    }    public byte[] getFile() {        return file;    }    public void setFile(byte[] value) {        this.file = value;    }}

对于小文件这样传输是没问题，但是对于大的文件（几兆以上吧）就可能报内存溢出的错误了，那么我们需要使用另一种方法，Using MTOM(SOAP Message Transmission Optimization Mechanism ),可到连接这个地址查看

<xs:complexType name="paramType">    <xs:sequence>        <xs:element minOccurs="0" name="name" type="xs:string"/>        <xsd:element name="file" type="xsd:base64Binary" xmime:expectedContentTypes="application/octet-stream"/> <!-- -->    </xs:sequence></xs:complexType>

@XmlAccessorType(XmlAccessType.FIELD)@XmlType(name = "paramType", propOrder = {    "name",    "file"})public class ParamType {    protected String name;    @XmlElement(required = true)    @XmlMimeType("application/octet-stream")    protected DataHandler file;    public String getName() {        return name;    }    public void setName(String value) {        this.name = value;    }    public DataHandler getFile() {        return file;    }    public void setFile(DataHandler value) {        this.file = value;    }}

cxf默认情况下没有开启对MTOM的支持，我们需要同时在客户端和服务端开启对MTOM的支持。

客户端

StudentService ss = new StudentService(wsdlURL, SERVICE_NAME);        People port = ss.getStudentPort();          SOAPBinding binding = (SOAPBinding) ((BindingProvider)port).getBinding();        binding.setMTOMEnabled(true);        System.out.println("Invoking sayGood...");        com.chm.test.ParamType parameters = new ParamType();        DataSource dataSource = new FileDataSource(new File("D:/test.xls"));        parameters.setFile(new DataHandler(dataSource));        parameters.setName("aa");        port.sayGood(parameters);

服务端

Object implementor = new StudentPortImpl();        String address = "http://localhost:8080/myservice3";        Endpoint ep = Endpoint.publish(address, implementor);        SOAPBinding binding = (SOAPBinding)ep.getBinding();        binding.setMTOMEnabled(true);

cxf与spring集成

web.xml

    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <servlet>        <servlet-name>CXFServlet</servlet-name>        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>    </servlet>    <servlet-mapping>        <servlet-name>CXFServlet</servlet-name>        <url-pattern>/*</url-pattern>    </servlet-mapping>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><beans    xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:p="http://www.springframework.org/schema/p"    xmlns:jaxws="http://cxf.apache.org/jaxws" <!-- 增加命名空间 -->    xsi:schemaLocation="http://www.springframework.org/schema/beans                         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd                        http://cxf.apache.org/jaxws                         http://cxf.apache.org/schemas/jaxws.xsd">    <import resource="classpath:META-INF/cxf/cxf.xml"/>    <!--<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml"/>-->    <!--<import resource="classpath:META-INF/cxf/cxf-servlet.xml"/>-->    <jaxws:endpoint id="myservice" implementor="com.chm.test.MyServiceImpl" address="/myserver"></jaxws:endpoint></beans>

客户端

<jaxws:client id="service" address="http://localhost:8080/myserver" serviceClass="com.chm.test.MyService"></jaxws:client>

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