{"id":110,"date":"2019-03-09T12:25:35","date_gmt":"2019-03-09T12:25:35","guid":{"rendered":"https:\/\/www.kindsonthegenius.com\/spring-boot\/?p=110"},"modified":"2020-07-26T08:14:07","modified_gmt":"2020-07-26T08:14:07","slug":"13-spring-boot-write-delete-methods","status":"publish","type":"post","link":"https:\/\/kindsonthegenius.com\/spring-boot\/13-spring-boot-write-delete-methods\/","title":{"rendered":"Spring Boot – Write DELETE Methods"},"content":{"rendered":"

In this chapter, we would write the DELETE methods. It is similar to the GET method. However, in case of he DELETE, the nothing is returned. Therefore it is a void method. Also the DELETE method in the controller files takes a path variable.<\/p>\n

    \n
  1. Write the deleteLocation Methods<\/a><\/li>\n
  2. Write the deleteUser Methods<\/a><\/li>\n
  3. Write the deletePost Methods<\/a><\/li>\n
  4. Test the Application<\/a><\/li>\n<\/ol>\n

     <\/p>\n

    1. Write the deleteLocation Methods<\/strong><\/h4>\n

    Open the LocationController file and write the deleteLocation method as shown below<\/p>\n

    <\/p>\n

     @RequestMapping<\/span>(<\/span>value =<\/span> \"\/location\/{id}\"<\/span>,<\/span> method =<\/span> RequestMethod.<\/span>DELETE<\/span>)<\/span>\r\n public<\/span> void<\/span> deleteLocation<\/span>(<\/span>@PathVariable<\/span> String id)<\/span> {<\/span>\r\n     locationService.<\/span>deleteLocation<\/span>(<\/span>id);<\/span>\r\n }<\/span>\r\n<\/pre>\n
    Listing 1.0: deleteLocation for the LocaitonController<\/p>\n
     <\/p>\n
    After you write this code, you will have an error. So you need to\u00a0add the deleteLocation method in the LocationService file as shown below<\/p>\n
    <\/p>\n
    public<\/span> void<\/span> deleteLocation<\/span>(<\/span>String id)<\/span> {<\/span>\r\n    locations.<\/span>removeIf<\/span>(<\/span>t -><\/span> t.<\/span>getId<\/span>().<\/span>equals<\/span>(<\/span>id));<\/span>\r\n}<\/span>\r\n<\/pre>\n
    Listing 1.1: deleteLocation for the LocationService class<\/p>\n
     <\/p>\n
     <\/p>\n
    2. Write the deleteUser Methods<\/strong><\/h4>\n
    Open the UserController file and write the deleteUser method as shown below<\/p>\n
    <\/p>\n
     @RequestMapping<\/span>(<\/span>value =<\/span> \"\/users\/{id}\"<\/span>,<\/span> method =<\/span> RequestMethod.<\/span>DELETE<\/span>)<\/span>\r\n public<\/span> void<\/span> deleteUser<\/span>(<\/span>@PathVariable<\/span> String id)<\/span> {<\/span>\r\n      userService.<\/span>deleteUser<\/span>(<\/span>id);<\/span>\r\n }<\/span>\r\n<\/pre>\n
    Listing 1.2: deleteUser for the UserController class<\/p>\n
     <\/p>\n
    Similarly, add the deleteUser method in the UserService file as shown below<\/p>\n
    <\/p>\n
    public<\/span> void<\/span> deleteUser<\/span>(<\/span>String id)<\/span> {<\/span>\r\n     users.<\/span>removeIf<\/span>(<\/span>u -><\/span> u.<\/span>getId<\/span>().<\/span>equals<\/span>(<\/span>id));<\/span>\t\t\r\n}<\/span>\r\n<\/pre>\n
    Listing 1.3: deleteUser for the UserService class<\/p>\n
     <\/p>\n
     <\/p>\n
    3. Write the deletePost Methods<\/strong><\/h4>\n
    Open the PostController file and write the updatedPost method as shown below.<\/p>\n
     @RequestMapping<\/span>(<\/span>value =<\/span> \"\/posts\/{id}\"<\/span>,<\/span> method =<\/span> RequestMethod.<\/span>DELETE<\/span>)<\/span>\r\n public<\/span> void<\/span> deletePost<\/span>(<\/span>@PathVariable<\/span> String id)<\/span> {<\/span>\r\n     postService.<\/span>deletePost<\/span>(<\/span>id);<\/span>\r\n }<\/span>\r\n<\/pre>\n
    Listing 1.4: deletePost for the PostController class<\/p>\n
     <\/p>\n
    Similarly, add the deletePost method in the LocationService file as shown below
    \n<\/p>\n
    public<\/span> void<\/span> deletePost<\/span>(<\/span>String id)<\/span> {<\/span>\r\n     posts.<\/span>removeIf<\/span>(<\/span>p -><\/span> p.<\/span>getId<\/span>().<\/span>equals<\/span>(<\/span>id));<\/span>\t\t\r\n}<\/span>\r\n<\/pre>\n
    Listing 1.5: deletePost for the postService class<\/p>\n
     <\/p>\n
     <\/p>\n
    4. Test the Application<\/strong><\/h4>\n
    Now, you can use Advanced REST Client to test the update methods.<\/p>\n
    You do it almost the same way as the GET methods. But this time you need to specify the id in the url as well.<\/p>\n
    After making the delete, you can then make a post request to confirm the delete worked.<\/p>\n
    I recommend you watch the video.<\/p>\n","protected":false},"excerpt":{"rendered":"
    In this chapter, we would write the DELETE methods. It is similar to the GET method. However, in case of he DELETE, the nothing is … <\/p>\n","protected":false},"author":1,"featured_media":112,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-spring-boot-tutorials"],"_links":{"self":[{"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/posts\/110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/comments?post=110"}],"version-history":[{"count":5,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/posts\/110\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/posts\/110\/revisions\/238"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/media\/112"}],"wp:attachment":[{"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/categories?post=110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kindsonthegenius.com\/spring-boot\/wp-json\/wp\/v2\/tags?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}