spring mvc not returning json content - error 406

Solution 1:

To return JSON response from @ResponseBody-annotated method, you need two things:

• <mvc:annotation-driven /> (you already have it)
• Jackson JSON Mapper in the classpath

You don't need ContentNegotiatingViewResolver and headers in @RequestMapping.

Solution 2:

I had this problem after I upgraded Spring to 4.1.x from 3.2.x. I fixed by upgrading Jackson from 1.9.x to 2.2.x (fasterxml)

 <dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.2.3</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.2.3</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.2.3</version>
</dependency>

Solution 3:

Try remove the header limitation for Accept, put a breakpoint and see what's the actual value. Or do this with FireBug.

Also take a look at this jquery issue