How to implement Rest web service using spring 3? - rest

Question

I have a Library application which is already implemented in spring MVC.
I need to use ReST web services for the same application using spring 3.
I have a Controller class I want is to be as a RestFul webService
#Controller #SessionAttributes("category")
public class CategoryController {
private static final Log log = LogFactory.getLog(CategoryController.class);
#Autowired
private CategoryService categoryService;
#Autowired
private ItemService itemService;
#RequestMapping("/category/categoryList.htm")
public ModelAndView list(HttpServletRequest request,
HttpServletResponse response) throws Exception {
List<Category> list = categoryService.getAllMainCategories();
Map map = new HashMap();
map.put("categoryList", list);
map.put("category", new Category());
return new ModelAndView("categoryList", map);
}
#RequestMapping(method = RequestMethod.POST, value = "/category/save.htm")
public String save(HttpServletRequest request,
HttpServletResponse response, Category command) throws Exception {
log.debug("save method called" + command);
Category category = (Category) command;
System.out.println(category);
categoryService.saveCategory(category);
return "redirect:/category/categoryList.htm";
}
#RequestMapping("/category/edit.htm")
public String edit(#RequestParam String id, ModelMap model)
throws Exception {
log.debug("edit method called :" + id);
log.debug(Long.parseLong(id));
Category cat = categoryService.getCategory(Long.parseLong(id));
model.put("categoryList", categoryService.getAllMainCategories());
model.put("category", cat);
return "categoryList";
}
#RequestMapping("/category/delete.htm")
public String remove(#RequestParam String id, ModelMap model)
throws Exception {
log.debug("remove method called " + id);
categoryService.deleteCategory(Long.parseLong(id));
return "redirect:/category/categoryList.htm";
}
#InitBinder
protected void initBinder(WebDataBinder binder) {
binder.registerCustomEditor(Category.class,
new PropertyEditorSupport() {
#Override
public void setAsText(String text) {
setValue(categoryService.getCategory(Long.valueOf(text)));
}
});
}
}
it is CategoryController class which add delete or update a category
ItemService and CategoryService are data sources
Category is a domain object having properties like id,name,description etc..,
How do I write a REST web service for this?

Answer 1

There's a simple example showing how in Barebones Spring. Check it out.