java 校验XSD文件

　　因为工程要对接第三方，对方是使用xml格式传输参数，也第一次接触到了xsd文件，在每次调用接口前，都要使用xsd文件校验传输的格式是否符合。

　　xsd一般包含多个文件，root，type，code以及子xsd文件，一般先加载root-->code(type)-->子xsd文件，如果全部定义在一个文件，直接加载一个文件就好了。

　　以下附上代码：

package ebshk.adsr.validate;

import org.apache.log4j.Logger;

import javax.xml.XMLConstants;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import java.io.StringReader;

public class ValidateUtil {

    private static Logger logger = Logger.getLogger(ValidateUtil.class);

    public static Boolean validate(String xml){
        Boolean pass = true;
        try {
            Source root = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/root_elements.xsd"));

            Source code = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/code_lists.xsd"));

            Source simple = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/simple_types.xsd"));

            Source ccd = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/client_centric_data.xsd"));

            Source customer = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/customer_account.xsd"));

            Source sub = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/sub_account.xsd"));

            Source trade = new StreamSource(ValidateUtil.class.getClassLoader()
                    .getResourceAsStream("xsd/trading_account.xsd"));

            Source[] sourceArr = {code, simple, ccd, customer, sub, trade, root};

            Schema schema = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI).newSchema(sourceArr);
            Validator validator = schema.newValidator();
            Source s = new StreamSource(new StringReader(xml));
            validator.validate(s);
        }catch (Exception e){
            e.printStackTrace();
            logger.info(e.getMessage());
            pass = false;
        }
        return pass;
    }
}