I&#39;m pretty sure that won&#39;t work. There may be a workaround, but the much easier way would be to introduce a wrapper Object and change your signature:

    public class PersonContext{
        private UserContext userContext;
        private Person person;
        // getters and setters
    }


    public Person createPerson(@RequestBody PersonContext personContext)


I want to create a dictionary in JavaScript like the following:

    myMappings = [
        { &quot;Name&quot;: 10%},
        { &quot;Phone&quot;: 10%},
        { &quot;Address&quot;: 50%},
        { &quot;Zip&quot;: 10%},
        { &quot;Comments&quot;: 20%}
    ]

I want to populate an HTML table later and want to set the titles of table to the first column of myMappings and the width of columns to the second. Is there a clean way to do it?




JavaScript dictionary with names

I want to create an XML file which will be used to store the structure of a Java program. I am able to successfully parse the Java program and create the tags as required. The problem arises when I try to include the source code inside my tags, since Java source code may use a vast number of entity reference and reserved characters like `&amp;`, `&lt;` ,`&gt;` , `&amp;`. I am not able to create a valid XML.

My XML should go like this:

    &lt;?xml version=&quot;1.0&quot;?&gt;
    &lt;prg name=&quot;prg_name&quot;&gt;
      &lt;class name= &quot;class_name&gt;
        &lt;parent&gt;parent class&lt;/parent&gt;
          &lt;interface&gt;Interface name&lt;/interface&gt;
    .
    .
    .
          &lt;method name= &quot;method_name&quot;&gt;
            &lt;statement&gt;the ordinary java statement&lt;/statement&gt;
            &lt;if condition=&quot;Conditional Expression&quot;&gt;
              &lt;statement&gt; true statements &lt;/statement&gt;
            &lt;/if&gt;
            &lt;else&gt;
              &lt;statement&gt; false statements &lt;/statement&gt;
            &lt;/else&gt;
            &lt;statement&gt; usual control statements &lt;/statement&gt;
     .
     .
     .
          &lt;/method&gt;
        &lt;/class&gt;
     .
     .
     .
     &lt;/prg&gt;

Like this, but the problem is conditional expressions of `if` or other statements have a lot of `&amp;` or other reserved symbols in them which prevents XML from getting validated. Since all this data (source code) is given by the user I have little control over it. Escaping the characters will be very costly in terms of time.

I can use CDATA to escape the element text but it can not be used for attribute values containing conditional expressions. I am using [Antlr][1] Java grammar to parse the Java program and getting the attributes and content for the tags. So is there any other workaround for it?

  [1]: http://www.antlr.org/

How do I include &amp;, &lt;, &gt; etc in XML attribute values

I&#39;ve implemented a Spring RESTful web service. Using Jackson JSON for Object Mapping. I have a method that accepts two parameters.

    public Person createPerson(
        @RequestBody UserContext userContext,
        @RequestBody Person person)

How would the client construct a request where in multiple JSON objects are to be passed in the body?

Is this possible?

-- Sri

Spring REST multiple @RequestBody parameters, possible?

I've implemented a Spring RESTful web service. Using Jackson JSON for Object Mapping. I have a method that accepts two parameters.
<pre><code class="hljs language-less">public Person createPerson(
 @RequestBody UserContext userContext,
 @RequestBody Person person)
</code></pre>
How would the client construct a request where in multiple JSON objects are to be passed in the body?
Is this possible?
-- Sri

&gt; **Possible Duplicate:**  
&gt; [how to use Java-style throws keyword in C#?](https://stackoverflow.com/questions/3465465/how-to-use-java-style-throws-keyword-in-c)  

&lt;!-- End of automatically inserted text --&gt;

i have a function where an exception occurs
say for example

    private void functionName() throws Exception
    {
       // some code that might throw an exception
    }

thanks!

Is there a throws keyword in C# like in Java?

What is the difference between a Theory and a Parameterized test? 

I&#39;m not interested in implementation differences when creating the test classes, just when you would choose one over the other.

Difference between JUnit Theories and Parameterized Tests

I have a String with a &quot;&#241;&quot; character and I have some problems with it. I need to encode this String to UTF-8 encoding. I have tried it by this way, but it doesn&#39;t work:

    byte ptext[] = myString.getBytes();
    String value = new String(ptext, &quot;UTF-8&quot;);

How do I encode that string to utf-8?

Encode String to UTF-8

I am building a project in Java. 

I have this error:

&lt;!-- language: lang-none --&gt;

    Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre6\lib\tools.jar

I have installed a JDK and the folder: `C:\Program Files\Java\jre6\lib` is in my system but the file `tools.jar` is not there.


Unable to locate tools.jar

I&#39;ve seen several discussions on the net about how great it would be to have an XML schema or DTD for logback.xml file to have at least the very basic validation and auto-completion in IDEs like IDEA or Eclipse, but I never saw any solution.

Did you?

XML schema or DTD for logback.xml?

How should I parse JSON using Node.js? Is there some module which will validate and parse JSON securely?

How to parse JSON using Node.js?

I am trying to set up a reader that will take in JSON objects from various websites (think information scraping) and translate them into C# objects.  I am currently using JSON.NET for the deserialization process.  The problem I am running into is that it does not know how to handle interface-level properties in a class.  So something of the nature:

    public IThingy Thing

Will produce the error:

&gt; Could not create an instance of type IThingy. Type is an interface or abstract class and cannot be instantiated.

It is relatively important to have it be an IThingy as opposed to a Thingy since the code I am working on is considered sensitive and unit testing is highly important.  Mocking of objects for atomic test scripts is not possible with fully-fledged objects like Thingy.  They must be an interface.

I&#39;ve been poring over JSON.NET&#39;s documentation for a while now, and the questions I could find on this site related to this are all from over a year ago.  Any help?

Also, if it matters, my app is written in .NET 4.0.

Casting interfaces for deserialization in JSON.NET

I have a problem deserializing a json string with Gson.
I  receive an array of commands. The command can be start,  stop , some other type of command. Naturally I have polymorphism, and start/stop command inherit from command. 

How can I serialize it back to the correct command object using gson?

Seems that I get only the base type, that is the declared type and never the runtime type.

Polymorphism with gson

For example, a HTTP REST API just returned me a JSON, but of course it&#39;s a string right now. How can I turn it into a JSON?

In Node.js, how do I turn a string to a json?

As a learning experience, I want to make an iPhone application that calls a webserver/webservice, retrieves a JSON response, and uses that response to populate the rows of a `UITableView` (assuming it converts the JSON into an `NSArray` first).

Anyone know of anything that might be useful?

iPhone/iOS JSON parsing tutorial

Probably the answer is simple: How can I manually logout the currently logged in user in spring security?
Is it sufficient to call:

    SecurityContextHolder.getContext().getAuthentication().setAuthenticated(false); 
?



How to manually log out a user with spring security?

Being fairly new to Spring I have a question about annotating a class. When annotating a class with `@Component` does this mean this class will be a Spring Bean and by default a singleton?

When annotating a class with @Component, does this mean it is a Spring Bean and Singleton?

I would like to have a bidirectional JSON to Java serialization

I&#39;m using **successfully** the Java to JSON to JQuery path... (`@ResponseBody`)
e.g. 

    @RequestMapping(value={&quot;/fooBar/{id}&quot;}, method=RequestMethod.GET)
    	 public @ResponseBody FooBar getFooBar(
                @PathVariable String id,
                HttpServletResponse response , ModelMap model) {
    		response.setContentType(&quot;application/json&quot;);
    ...
    }

and In JQuery I use 

    $.getJSON(&#39;fooBar/1&#39;, function(data) {
        //do something
    });

this works **well** (e.g. annotations work already, thanks to all the answerers)

However, how do I do the **reverse** path: have JSON be serialized to a Java Object back using RequestBody? 

no matter what I try, I can&#39;t get something like this to work:

    @RequestMapping(value={&quot;/fooBar/save&quot;}, method=RequestMethod.POST)
    public String saveFooBar(@RequestBody FooBar fooBar,
            HttpServletResponse response , ModelMap model) {

      //This method is never called. (it does when I remove the RequestBody...)
    }

I have Jackson configured correctly (it serializes on the way out) and I have MVC set as annotations driven of course

How do I make it work? is it possible at all? or is Spring / JSON / JQuery is oneway (out)? 


----------


**Update:**

I changed this Jackson setting

	&lt;bean id=&quot;jsonHttpMessageConverter&quot;
		class=&quot;org.springframework.http.converter.json.MappingJacksonHttpMessageConverter&quot; /&gt;

	&lt;!-- Bind the return value of the Rest service to the ResponseBody. --&gt;
	&lt;bean
		class=&quot;org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter&quot;&gt;
		&lt;property name=&quot;messageConverters&quot;&gt;
			&lt;util:list id=&quot;beanList&quot;&gt;
				&lt;ref bean=&quot;jsonHttpMessageConverter&quot; /&gt;
	&lt;!-- 			&lt;ref bean=&quot;xmlMessageConverter&quot; /&gt; --&gt;				
			&lt;/util:list&gt;
		&lt;/property&gt;
	&lt;/bean&gt;


To the (almost similiar one) suggested 

 

    &lt;bean id=&quot;jacksonMessageConverter&quot;
    	class=&quot;org.springframework.http.converter.json.MappingJacksonHttpMessageConverter&quot;&gt;&lt;/bean&gt;
    	&lt;bean
    		class=&quot;org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter&quot;&gt;
    		&lt;property name=&quot;messageConverters&quot;&gt;
    			&lt;list&gt;
    				&lt;ref bean=&quot;jacksonMessageConverter&quot; /&gt;
    			&lt;/list&gt;
    		&lt;/property&gt;
    	&lt;/bean&gt; 


And it seems to work! I don&#39;t know what exactly did the trick, but it works...

JQuery, Spring MVC @RequestBody and JSON - making it work together

What is the difference between these 2? I found few results on google nothing conclusive. 

Here is a follow up question: 

Say I create spring mvc web app annotate couple of classes with @Controller annotation and create something that will successfully transfer some information from front end -&gt; back end and vice versa and perhaps some database might be involved on the back end side. 

What would you call that? Rest web service or servlet or something else ?

Difference between servlet and web service

We are planning to write a web application from the scratch, it has been decided to go with the latest edition of Glassfish which complies with Java EE 6 standard, therefore we are analyzing if CDI can be used instead of Spring. 

Can we say that CDI could be a replacement for Spring?

Is CDI a good replacement of Spring?

At the moment I&#39;m trying to get started with Spring MVC. While trying things out I ran into an encoding issue. 

I want to display UTF-8 characters on my JSP-Pages so I added a String with UTF-8 characters to my ModelAndView. It looks like this:

    @Controller
    public class HomeController {
    
    	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
    
    	@RequestMapping(value=&quot;/&quot;, method=RequestMethod.GET)
    	public ModelAndView home() {
    		logger.info(&quot;Welcome home!&quot;);
    		return new ModelAndView(&quot;home&quot;, &quot;utftest&quot;, &quot;&#246;lm&quot;);
    	}
    	
    }

On the JSP page I just want to display the String with UTF-8 characters like this:

    &lt;%@ page language=&quot;java&quot; pageEncoding=&quot;UTF-8&quot;%&gt;
    &lt;%@ page contentType=&quot;text/html;charset=UTF-8&quot; %&gt;
    &lt;%@ taglib uri=&quot;http://java.sun.com/jsp/jstl/core&quot; prefix=&quot;c&quot; %&gt;
    &lt;%@ page session=&quot;false&quot; %&gt;
    &lt;html&gt;
    &lt;head&gt;
    	&lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=utf-8&quot;&gt;
    	&lt;title&gt;Home&lt;/title&gt;
    &lt;/head&gt;
    &lt;body&gt;
    	&lt;h1&gt;Hello world!&lt;/h1&gt;
    	&lt;p&gt;&lt;c:out value=&quot;&#246;&quot; /&gt;&lt;/p&gt;
    	&lt;p&gt;&lt;c:out value=&quot;${utftest}&quot;&gt;&lt;/c:out&gt;&lt;/p&gt;
    &lt;/body&gt;
    &lt;/html&gt;

As result I get following:

    Hello world!
    
    &#246;
    
    √∂lm

Note that following code `&lt;c:out value=&quot;&#246;&quot; /&gt;` was displayed without encoding error.
I also set the default encoding to UTF-8 in Springsource Tool Suite but I&#39;m still getting wrong characters.

**Edit:**

Maybe I should have mentioned that I&#39;m using a Mac with OS X 10.6. For Spring development I use the Springsource Tool Suite from Spring (http://www.springsource.com/developer/sts).
Hope this helps to find out what is wrong with my setting.

**Edit 2:**

Thanks to McDwell, I just tried out using `&quot;\u00f6lm&quot;` instead of `&quot;&#246;lm&quot;` in my controller and the encoding issue on the JSP page is gone. 

Does that mean my .java files are encoded with wrong character set? Where can I change this in Eclipse?

Thank you.

Spring MVC UTF-8 Encoding

I am working on a project with Spring why do I keep getting the following error?

&gt; javax.validation.UnexpectedTypeException:  
&gt; No validator could be found for type: java.lang.Integer

Here is my code:
    

    package com.s2rsolutions.model;
    
    import java.util.Date;
    
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.Id;
    import javax.persistence.Table;
    import javax.validation.constraints.Size;
    
    import org.hibernate.validator.constraints.NotEmpty;
    
    @Entity
    @Table(name = &quot;sales&quot;)
    public class Sales {
    
    	@NotEmpty(message = &quot;The above field must not be blank.&quot;)
    	@Column(name = &quot;ttl_d_sls_lst_mth&quot;, nullable = false)
    	private Integer ttl_d_sls_lst_mth;
    
    	@NotEmpty(message = &quot;The above field must not be blank.&quot;)
    	@Column(name = &quot;ttl_d_sls_6_mth&quot;, nullable = false)
    	private Integer ttl_d_sls_6_mth;
    
    	@Column(name = &quot;date_added&quot;)
    	private Date addedDate;
    
    	@Id
    	@Column(name = &quot;username&quot;)
    	private String username;

        // other fields/getters/setters omitted for brevity
    
    }



Validation error: &quot;No validator could be found for type: java.lang.Integer&quot;

I&#39;m using Spring Security 3 and Spring MVC 3.05.

I would like to print username of currently logged in user,how can I fetch UserDetails in my Controller?

    @RequestMapping(value=&quot;/index.html&quot;, method=RequestMethod.GET)
    	public ModelAndView indexView(){
             UserDetails user = ?
                    mv.addObject(&quot;username&quot;, user.getUsername());
    		ModelAndView mv = new ModelAndView(&quot;index&quot;);
    		return mv;
    	}	



Get UserDetails object from Security Context in Spring MVC controller

I&#39;m running a webapp in Spring Web MVC 3.0 and I have a number of controller methods whose signatures are roughly as follows:

    @RequestMapping(value = &quot;/{level1}/{level2}/foo&quot;, method = RequestMethod.POST)
    public ModelAndView createFoo(@PathVariable long level1,
            @PathVariable long level2,
            @RequestParam(&quot;foo_name&quot;) String fooname,
            @RequestParam(value = &quot;description&quot;, required = false) String description);


I&#39;d like to add some validation - for example, `description` should be limited to a certain length or `fooname` should only contain certain characters. If this validation fails, I want to return a message to the user rather than just throw some unchecked exception (which would happen anyway if I let the data percolate down to the DAO layer). I&#39;m aware of JSR303 but have not worked with it and don&#39;t quite understand how to apply it in a Spring context.

From what I understand, another option would be to bind the `@RequestBody` to an entire domain object and add validation constraints there, but currently my code is set up to accept individual parameters as shown above.

What is the most straightforward way to apply validation to input parameters using this approach?

Spring Web MVC - validate individual request params

I am attempting to deserialize a JSON object stored in CouchDb using Jackson.  This object needs to deserialize into a pojo that contains overloaded methods.  When I attempt to retrieve the object from couch and do the deserialization I get the following exception:

&gt; org.ektorp.DbAccessException:
&gt; org.codehaus.jackson.map.JsonMappingException:
&gt; Conflicting setter definitions for
&gt; property &quot;multiplier&quot;: 
&gt; com.db.commodities.framework.sdos.model.security.EqOpt#setMultiplier(1
&gt; params) vs 
&gt; com.db.commodities.framework.sdos.model.security.EqOpt#setMultiplier(1
&gt; params)

I tried to annotate the setter I would like Jackson to use, but that appears to not have worked.

    @JsonProperty(&quot;multiplier&quot;)
    public void setMultiplier(SDOSAttribute multiplier) {
         this.multiplier = multiplier;
    }
    
    public void setMultiplier(double multiplier) {
         this.multiplier.setValue(String.valueOf(multiplier));
    }

How do I configure Jackson to properly deserialize using a specific method?  Or am I approaching this problem the wrong way?


**EDIT:**

I have made the following changes.  This seems to work, but is a little uglier.  If anyone has a better way to do this please feel free to share and I will gladly accept.

	@JsonProperty(&quot;multiplier&quot;)
	protected void setMultiplierAttribute(SDOSAttribute multiplier) {
		this.multiplier = multiplier;
	}
	
	@JsonIgnore
	public void setMultiplier(double multiplier) {
		this.multiplier.setValue(String.valueOf(multiplier));
	}

Deserializing JSON into object with overloaded methods using Jackson

The [Jackson data binding documentation][1] indicates that Jackson supports deserialising  &quot;Arrays of all supported types&quot; but I can&#39;t figure out the exact syntax for this.

For a single object I would do this:

    //json input
    {
        &quot;id&quot; : &quot;junk&quot;,
        &quot;stuff&quot; : &quot;things&quot;
    }

    //Java
    MyClass instance = objectMapper.readValue(json, MyClass.class);

Now for an array I want to do this:

    //json input
    [{
        &quot;id&quot; : &quot;junk&quot;,
        &quot;stuff&quot; : &quot;things&quot;
    },
    {
        &quot;id&quot; : &quot;spam&quot;,
        &quot;stuff&quot; : &quot;eggs&quot;
    }]

    //Java
    List&lt;MyClass&gt; entries = ?

Anyone know if there is a magic missing command? If not then what is the solution?


  [1]: http://jackson.codehaus.org/DataBindingDeepDive

How to use Jackson to deserialise an array of objects

I have a domain object that has a Map:

    private Map&lt;AutoHandlingSlotKey, LinkedHashSet&lt;AutoFunction&gt;&gt; autoHandling;

When I serialize the object, I get this:

    &quot;autoHandling&quot; : [ &quot;java.util.HashMap&quot;, {
    } ],


This Map&#39;s key is a custom Object:

    public class AutoHandlingSlotKey implements Serializable {
        private FunctionalArea slot; // ENUM
        private String returnView;   // ENUM

So, I am not sure how to correct this exception I keep getting when I deserialize the object:

    org.codehaus.jackson.map.JsonMappingException: Can not find a (Map) Key deserializer for type [simple type, class com.comcast.ivr.core.domain.AutoHandlingSlotKey]

How to correct this issue? I do *not* have access to the domain object to modify.


Can not find a (Map) Key deserializer for type [simple type, class ...]

While developing REST services using Spring MVC, I would like render JSON &#39;pretty printed&#39; in development but normal (reduced whitespace) in production.

When using Spring MVC for REST, how do you enable Jackson to pretty-print rendered JSON?

I want to use jackson json library for a generic method as follows:

    public MyRequest&lt;T&gt; tester() {
        TypeReference&lt;MyWrapper&lt;T&gt;&gt; typeRef = new TypeReference&lt;MyWrapper&lt;T&gt;&gt;();  
        MyWrapper&lt;T&gt; requestWrapper = (MyWrapper&lt;T&gt;) JsonConverter.fromJson(jsonRequest, typeRef);
        return requestWrapper.getRequest();
    }

&lt;!--&gt;

    public class MyWrapper&lt;T&gt; {
    
        private MyRequest&lt;T&gt; request;
    
        public MyRequest&lt;T&gt; getRequest() {
            return request;
        }
    
        public void setRequest(MyRequest&lt;T&gt; request) {
            this.request = request;
        }
    }
&lt;!--&gt;
    public class MyRequest&lt;T&gt; {
         private List&lt;T&gt; myobjects;
            
         public void setMyObjects(List&lt;T&gt; ets) {
             this.myobjects = ets;
         }

         @NotNull
         @JsonIgnore
         public T getMyObject() {
             return myobjects.get(0);
         }
    }


Now the problem is that when I call getMyObject() which is inside the request object Jackson returns the nested custom object as a LinkedHashMap. Is there any way in which I specify that T object needs to be returned? For example: if I sent object of type Customer then Customer should be returned from that List?

Content Type	Original Author	Original Content on Stackoverflow
Question	Sri	View Question on Stackoverflow
Solution 1 - Java	Sean Patrick Floyd	View Answer on Stackoverflow

Spring REST multiple @RequestBody parameters, possible?

Java Problem Overview

Java Solutions

Solution 1 - Java

How do I include &, <, > etc in XML attribute values

JavaScript dictionary with names

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