Detailed explanation of how java map obtains values

1. Create an iterator

2.While loop to take out the value

3.Use get to get the value

/**
* Delete
* @param reqmap
* @return
*/
@RequestMapping(value = "/delete", method = RequestMethod.POST)
public Map delete(@RequestBody Map reqmap){
System .out.println("Received data"+reqmap);

Map map = new HashMap();

Iterator iterator = reqmap.keySet().iterator();

while(iterator.hasNext()){
Object key = iterator.next();
System.out.println(reqmap.get( key));
}

map.put("msg", "Delete successfully");

return map;

}

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