如何使用cq.HTTP.post方法验证字段在adobe cq5? [英] How to validate a field using cq.HTTP.post method In adobe cq5?
问题描述
我正在尝试通过向servlet发送字段值来验证一个字段,并且作为回应,我变为true或false,即该字段是否有效。这是我的对话框文件
I am trying to validate a field by sending field value to a servlet and in response i'm getting true or false i.e whether this field is valid or not . here is my dialog file
<bodytext
jcr:primaryType="cq:Widget"
fieldDescription="Type Text Here"
fieldLabel="Body Text"
name="./bodytext"
validator= "function(value) {
var dialog = this.findParentByType('dialog');
var postParams = {};
postParams['value'] = value;
CQ.HTTP.post('/ bin / feeds / validation.json',function(options,success,response){response.valid?true:'表单名称已经存在于此页面上。 },postParams);
}
xtype =textarea/>
CQ.HTTP.post('/bin/feeds/validation.json', function(options, success, response){response.valid ? true : 'Form name already exists on this page.';},postParams);
}"
xtype="textarea"/>
这里是我的servlet代码
and here is my servlet code
import java.io.IOException;
import javax.servlet.ServletException;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.apache.sling.api.servlets.SlingSafeMethodsServlet;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.io.JSONWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.day.cq.commons.TidyJSONWriter;
public abstract class AbstractValidatorServlet extends SlingAllMethodsServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
private static final Logger LOG = LoggerFactory.getLogger(AbstractValidatorServlet.class);
@Override
protected final void doPost(final SlingHttpServletRequest request, final SlingHttpServletResponse response)
throws ServletException, IOException {
final String value = request.getRequestParameter("value").getString();
final boolean valid = isValid(value);
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
try {
final TidyJSONWriter writer = new TidyJSONWriter(response.getWriter());
response.setContentType("application/json");
//JSONWriter writer = new JSONWriter(response.getWriter());
try {
writer.object();
writer.key("valid").value(valid);
writer.endObject();
} catch (JSONException e) {
e.printStackTrace();
}
} catch (final IOException ioe) {
LOG.error("error writing JSON response", ioe);
}
}
/**
* Validate the given value for this request and path.
*
* @param request servlet request
* @param path path to current component being validated
* @param value input value to validate
* @return true if value is valid, false otherwise
*/
protected abstract boolean isValid(final String value);
}
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.tidy.Tidy;
import com.adobe.granite.xss.XSSAPI;
@Component
@Service
@Properties({
@Property(name="sling.servlet.paths",value="/bin/feeds/validation"),
@Property(name = "sling.servlet.extensions", value = "json"),
@Property(name = "sling.servlet.methods", value = "POST"),
@Property(name = "sling.servlet.selectors", value = "validator"),
@Property(name = "service.description", value = "XSS API HTML Validator Servlet")
})
public final class HTMLValidatorServlet extends AbstractValidatorServlet {
private static final long serialVersionUID = 1L;
private static final Logger LOG = LoggerFactory.getLogger(HTMLValidatorServlet.class);
@Reference
XSSAPI xssapi;
@Override
protected boolean isValid(final String value) {
String data = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">"
+ "<html xmlns=\"http://www.w3.org/1999/xhtml\"><title></title><body>"+StringEscapeUtils.unescapeHtml(value)+"</body></html>";
Tidy tidy=new Tidy();
tidy.setXmlTags(true);
tidy.setXHTML(true);
StringWriter writer = new StringWriter();
tidy.setErrout(new PrintWriter(writer));
ByteArrayInputStream in = new ByteArrayInputStream(data.getBytes());
ByteArrayOutputStream out = new ByteArrayOutputStream();
tidy.parse(in,out);
int numErrors = tidy.getParseErrors();
if(numErrors > 0)
{
return false;
}
else{
return true;
}
}
}
在cq5中得到一个不明确的错误。可以任何我缺少的人感谢提前
I'm getting aUnspecified Error in cq5. can anybody where i'm lacking . thanks in advance
推荐答案
问题实际上是servlet正在期待一个json扩展,而你没有发送。仔细观察以下定义:
The problem is actually that the servlet is expecting a json extension and you are sending none. Look closely at the following definition:
@Property(name = "sling.servlet.extensions", value = "json")
在您的JS函数中,您正在调用url / bin / feeds / validation:
and in your JS function you are calling the url /bin/feeds/validation:
CQ.HTTP.post('/bin/feeds/validation', function(options, success, response){}
所以将URL更改为/bin/feeds/validation.json,它应该可以工作
除此之外期待json和你正在生成一个html输出
对于构建json响应,可以使用类com.day.cq.commons.TidyJSONWriter,如下所示:
So change the url to /bin/feeds/validation.json and it should work. Beside this you are expecting json and you are generating a html output. For building json response, you can use the class com.day.cq.commons.TidyJSONWriter as follows:
@Override
protected void doGet(final SlingHttpServletRequest request, final SlingHttpServletResponse response) throws ServletException, IOException {
final TidyJSONWriter writer = new TidyJSONWriter(response.getWriter());
response.setContentType("application/json");
try {
writer.object();
writer.key("mykey").value("myvalue");
writer.endObject();
} catch(Exception e) {
//handle the exceptions
}
}
这篇关于如何使用cq.HTTP.post方法验证字段在adobe cq5?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!