The only way to reliably convert json to xml and back again is via the use of type hints in the xml. the default converter does not do this. it
1. drops everything after the first property
2. confuses single element lists with properties when going from xml to json
i 已使用json- util 库重新实施转基因分类, 该库将 json 转换为 xml, 内含作为元素属性的类型提示, 以确保没有模糊性 。
这样我们就可以通过WSO2, 智能地代理所有json提供的无问题休息服务(即内容路线和运输和有效载荷的中转)
这解决了问题(我认为骆驼是默认情况下这样做的)。
以下是波姆文件及代码:
<强 > 将罐装罐装成/存储/组件/ lib < / 强 >
您必须更新轴 2. xml strong > 中内容类型“ 应用程序/ json” 的信息格式和信息创建器映射图
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<name>wso2 json/xml converter</name>
<groupId>x.y.z</groupId>
<artifactId>wso2converter</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<jdk.version>1.6</jdk.version>
</properties>
<build>
<finalName>wso2converter</finalName>
<resources>
<resource>
<filtering>false</filtering>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.0.1</version>
<executions>
<execution>
<id>enforce-jdk</id>
<phase>validate</phase>
<goals>
<goal>display-info</goal>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireJavaVersion>
<version>[${jdk.version},)</version>
</requireJavaVersion>
</rules>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.3</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.ws.commons.axiom</groupId>
<artifactId>axiom-api</artifactId>
<version>1.2.13</version>
</dependency>
<dependency>
<groupId>org.apache.axis2</groupId>
<artifactId>axis2-kernel</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>xom</groupId>
<artifactId>xom</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.apache.synapse</groupId>
<artifactId>synapse-core</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.1.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.13</version>
<!--scope>provided</scope-->
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
package a.b.wso2;
import java.io.InputStream;
import net.sf.json.JSON;
import net.sf.json.JSONSerializer;
import net.sf.json.xml.XMLSerializer;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.util.AXIOMUtil;
import org.apache.axis2.AxisFault;
import org.apache.axis2.builder.Builder;
import org.apache.axis2.context.MessageContext;
import org.apache.commons.io.IOUtils;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
public class WsoJtoX implements Builder {
Logger logger = Logger.getLogger("a.b.wso2converter");
@Override
public OMElement processDocument(InputStream is, String contentType,
MessageContext messageContext) throws AxisFault {
String jsonData = "";
try {
jsonData = IOUtils.toString(is,"UTF-8");
String output = process(jsonData);
OMElement e = AXIOMUtil.stringToOM(output);
return e;
} catch (Exception e) {
logger.error("error converting json string " + jsonData, e);
if (e instanceof AxisFault) {
throw (AxisFault) e;
}
throw new AxisFault("(B"+counter+") error converting json to xml", e);
}
}
static int counter=0;
public String process(String jsonData) throws AxisFault {
try {
String tran = "__ns__";
jsonData=jsonData.replace("
", "").trim();
//jsonData=jsonData.replace("
", "");
String decoded = (jsonData.replaceAll(""([a-zA-Z0-9_]*)\:([a-zA-Z0-9]*)"(\s*)(:)", ""$1" + tran + "$2"$3:"));
counter++;
if (logger.isDebugEnabled()) {
logger.debug("
>>>>> (B"+counter+") converting json
" + jsonData + "
====");
}
XMLSerializer serializer = new XMLSerializer();
JSON json = JSONSerializer.toJSON(decoded);
String xml = serializer.write(json);
//add in the soap stuff
StringBuilder sb = new StringBuilder();
sb.append("<soap:Envelope xmlns:soap="http://www.w3.org/2001/12/soap-envelope" soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding"> <soap:Body>");
sb.append(xml.replace("<?xml version="1.0" encoding="UTF-8"?>", ""));
sb.append("</soap:Body></soap:Envelope>");
if (logger.isDebugEnabled()) {
logger.debug("
==== (B"+counter+") to xml
" + sb.toString()+"
<<<<<");
}
return sb.toString();
} catch (Exception e) {
throw new AxisFault("(B"+counter+") error transforming json to xml", e);
}
}
}
package a.b.wso2;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import net.sf.json.JSON;
import net.sf.json.xml.XMLSerializer;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMOutputFormat;
import org.apache.axiom.om.util.AXIOMUtil;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.transport.MessageFormatter;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
public class WsoXtoJ implements MessageFormatter {
Logger logger = Logger.getLogger("a.b.wso2converter");
private static int counter=0;
public String convert(String xData) {
counter++;
if (logger.isDebugEnabled()) {
logger.debug("
]]]]] (A"+counter+") converting xml
" + xData + "
-----");
}
try {
String tran = "__ns__";
XMLSerializer serializer = new XMLSerializer();
OMElement e = AXIOMUtil.stringToOM(xData);
OMElement b = (OMElement) e.getChildrenWithLocalName("Body").next();
b = (OMElement) b.getChildElements().next();
String xfrag = b.toStringWithConsume();
String str = "";
JSON j = serializer.read(xfrag);
str = j.toString();
String nstr = str.replaceAll(""([a-zA-Z0-9_]+)" + tran + "([a-zA-Z0-9]+)"(\s*)(:)", ""$1:$2"$3:"); //", ""$1:$2"");
if (logger.isDebugEnabled()) {
logger.debug("
----- (A"+counter+") to json
" + nstr+"
[[[[[");
}
return nstr;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public String formatSOAPAction(MessageContext msgCtxt, OMOutputFormat format,
String soapActionString) {
return null;
}
@Override
public byte[] getBytes(MessageContext ctx, OMOutputFormat format)
throws AxisFault {
String env="";
try {
OMElement element = ctx.getEnvelope().getBody().getFirstElement();
String payload = this.convert(element.toString());
return payload.getBytes(format.getCharSetEncoding());
} catch (UnsupportedEncodingException e) {
logger.error("(A"+counter+") error converting xml to json "+ctx.getEnvelope().toString());
throw AxisFault.makeFault(e);
}
}
@Override
public String getContentType(MessageContext msgCtxt, OMOutputFormat format,
String soapActionString) {
String contentType = (String) msgCtxt.getProperty(Constants.Configuration.CONTENT_TYPE);
String encoding = format.getCharSetEncoding();
if (contentType == null) {
contentType = (String) msgCtxt.getProperty(Constants.Configuration.MESSAGE_TYPE);
}
if (encoding != null) {
contentType += "; charset=" + encoding;
}
return contentType;
}
@Override
public URL getTargetAddress(MessageContext msgCtxt, OMOutputFormat format,
URL targetURL) throws AxisFault {
return targetURL;
}
@Override
public void writeTo(MessageContext msgCtxt, OMOutputFormat format,
OutputStream out, boolean preserve) throws AxisFault {
try {
out.write(this.getBytes(msgCtxt, format));
out.flush();
} catch (IOException e) {
throw AxisFault.makeFault(e);
}
}
}