com.sun.mail.smtp.SMTPSendFailedException: 530 Authentication required 解决方案

530 Authentication required
com.sun.mail.smtp.SMTPSendFailedException: 530 Authentication required

 at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:1388)
 at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:959)
 at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:583)
 at com.email.SendTextMail.send(SendTextMail.java:112)
 at org.apache.jsp.sendMail_jsp._jspService(sendMail_jsp.java:71)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Unknown Source)

使用JSP发送新浪邮件的时候老是报下面这个异常，后来查资料只要如下改就可以了：

Properties props = System.getProperties();
        //指定SMTP服务器
        props.put("mail.smtp.host", SMTPHost);
        props.put("mail.smtp.auth", "true"); //true一定要加引号

把true加上引号就可以了。