Question

是否有类似struts2-jaxb-plugin的插件适用于版本高于2.0.x的struts2版本？

较新版本的struts2不再具有类com.opensymphony.xwork2.ActionContext上的get（Object o）。

如果有更好的方法来完成struts2的xml结果，请随意指向正确的方向。

否则，我正在考虑编写自己的编组拦截器和jaxb结果类型，就像struts2-jaxb-plugin中发生的一样。

当前版本：

struts2：2.3.14
jaxb-api：2.2.9

Answer 1

刚写了我自己的jaxb结果类型。它比我想象的要容易。

将它留在下面寻找类似的东西：

import java.io.IOException;
import java.io.Writer;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.Result;
import com.opensymphony.xwork2.util.ValueStack;

public class JaxbResult implements Result {
    private static final long serialVersionUID = -5195778806711911088L;
    public static final String DEFAULT_PARAM = "jaxbObjectName";

    private String jaxbObjectName;

    public void execute(ActionInvocation invocation) throws Exception {
        Object jaxbObject = getJaxbObject(invocation);
        Marshaller jaxbMarshaller = getJaxbMarshaller(jaxbObject);
        Writer responseWriter = getWriter();

        setContentType();
        jaxbMarshaller.marshal(jaxbObject, responseWriter);
    }

    private Writer getWriter() throws IOException {
        return ServletActionContext.getResponse().getWriter();
    }

    private Marshaller getJaxbMarshaller(Object jaxbObject) throws JAXBException {
        JAXBContext jaxbContext = JAXBContext.newInstance(jaxbObject.getClass());
        Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
        jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

        return jaxbMarshaller;
    }

    private Object getJaxbObject(ActionInvocation invocation) {
        ValueStack valueStack = invocation.getStack();

        return valueStack.findValue(getJaxbObjectName());
    }

    private void setContentType() {
        ServletActionContext.getResponse().setContentType("text/xml");
    }

    public String getJaxbObjectName() {
        return jaxbObjectName;
    }

    public void setJaxbObjectName(String jaxbObjectName) {
        this.jaxbObjectName = jaxbObjectName;
    }
}

struts-xml中的配置如下所示：

<result-types>
    <result-type name="jaxb" class="JaxbResult" />
</result-types>

<action name="testaction" class="TestAction">
    <result name="success" type="jaxb" >jaxbObject</result>
</action>

struts2和jaxb用于高于2.0.x的struts2版本

1 个答案: