{"id":2741,"date":"2023-04-12T16:58:16","date_gmt":"2023-04-12T08:58:16","guid":{"rendered":"https:\/\/hsin-life.com\/?p=2741"},"modified":"2023-04-12T16:58:17","modified_gmt":"2023-04-12T08:58:17","slug":"%e4%bd%bf%e7%94%a8tostringbuilder%e9%a1%9e%e7%b0%a1%e5%8c%96tostring%e6%96%b9%e6%b3%95%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/hsin-life.com\/archives\/2741","title":{"rendered":"\u4f7f\u7528ToStringBuilder\u985e\u7c21\u5316toString\u65b9\u6cd5\u5be6\u73fe"},"content":{"rendered":"\n<p>ToStringBuilder\u985e\u662fApache Commons Lang\u5eab\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u7d44\u4ef6\uff0c\u5b83\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u5354\u52a9Java\u4e2dObject.toString()\u65b9\u6cd5\u5be6\u73fe\u5b57\u7b26\u4e32\u8f38\u51fa\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528ToStringBuilder\u985e\u53ef\u4ee5\u70ba\u4efb\u4f55\u985e\u6216\u5c0d\u8c61\u63d0\u4f9b\u4e00\u500b\u826f\u597d\u4e14\u4e00\u81f4\u7684toString\u65b9\u6cd5\u5be6\u73fe\uff0c\u540c\u6642\u7c21\u5316\u8655\u7406\u904e\u7a0b\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528ToStringBuilder\u985e\u7de8\u5beb\u7684\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package common.lang;\r\nimport org.apache.commons.lang3.builder.ToStringBuilder;\r\nimport org.apache.commons.lang3.builder.ToStringStyle;\r\n\r\npublic class User {\r\n  private int age;\r\n  private String username;\r\n\r\n  public User(int age, String username) {\r\n    this.age = age;\r\n    this.username = username;\r\n  }\r\n\r\n  public int getAge() {\r\n    return age;\r\n  }\r\n\r\n  public void setAge(int age) {\r\n    this.age = age;\r\n  }\r\n\r\n  public String getUsername() {\r\n    return username;\r\n  }\r\n\r\n  public void setUsername(String username) {\r\n    this.username = username;\r\n  }\r\n\r\n  @Override\r\n  public String toString() {\r\n    return new ToStringBuilder(this, ToStringStyle.JSON_STYLE)\r\n      .append(\"age\", age)\r\n      .append(\"username\", username)\r\n      .toString();\r\n  }\r\n}\r\n<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528ToStringBuilder\u985e\u5354\u52a9\u5be6\u73fePO\u985e\u7684toString\u65b9\u6cd5\u6642\uff0c\u53ef\u4ee5\u901a\u904eToStringStyle\u985e\u6307\u5b9a\u60f3\u8981\u8f38\u51fa\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u9762\u7684\u4ee3\u78bc\u793a\u4f8b\u70ba\u4f8b\uff0ctoString\u65b9\u6cd5\u5c07\u6703\u8f38\u51fa\uff1a{&#8220;age&#8221;:12,&#8221;username&#8221;:&#8221;yaomy&#8221;}\u3002<\/p>\n\n\n\n<p>\u9664\u6b64\u4e4b\u5916\uff0cToStringBuilder\u985e\u9084\u63d0\u4f9b\u4e86\u53cd\u5c04\u65b9\u6cd5\u4f86\u7c21\u5316toString\u65b9\u6cd5\u7684\u5be6\u73fe\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528reflectionToString\u65b9\u6cd5\u4f86\u81ea\u52d5\u8655\u7406\u79c1\u6709\u5b57\u6bb5\u3002<\/p>\n\n\n\n<p>\u9019\u7a2e\u65b9\u6cd5\u9700\u8981\u4f7f\u7528AccessibleObject.setAccessible\u4f86\u66f4\u6539\u5b57\u6bb5\u7684\u53ef\u898b\u6027\uff0c\u4f46\u5728\u5b89\u5168\u7ba1\u7406\u5668\u4e0b\u53ef\u80fd\u6703\u5931\u6557\uff0c\u9664\u975e\u8a2d\u7f6e\u4e86\u9069\u7576\u7684\u6b0a\u9650\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528reflectionToString\u65b9\u6cd5\u7684\u5178\u578b\u8abf\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public String toString() {\r\n  return ToStringBuilder.reflectionToString(this);\r\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528ToStringBuilder\u985e\u9084\u53ef\u4ee5\u8abf\u7528\u7b2c\u4e09\u65b9\u5c0d\u8c61\u7684toString\u65b9\u6cd5\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>System.out.println(\"An object: \" + ToStringBuilder.reflectionToString(anObject));\r<\/code><\/pre>\n\n\n\n<p>\u5177\u9ad4\u7684\u65e5\u671f\u683c\u5f0f\u5c07\u6839\u64da\u50b3\u5165\u7684ToStringStyle\u6a23\u5f0f\u800c\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7d39\u4e86\u4f7f\u7528ToStringBuilder\u985e\u5354\u52a9\u7c21\u5316Java\u4e2dtoString\u65b9\u6cd5\u7684\u5be6\u73fe\u904e\u7a0b\uff0c\u4e26\u5c55\u793a\u5982\u4f55\u4f7f\u7528ToStringStyle\u985e\u6307\u5b9a\u8f38\u51fa\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002<\/p>\n","protected":false},"author":1,"featured_media":2743,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[145],"tags":[648,87,649,647,650,651],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/hsin-life.com\/wp-content\/uploads\/2023\/04\/pexels-photo-270348-2.jpeg?fit=1880%2C1011&ssl=1","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/2741"}],"collection":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/comments?post=2741"}],"version-history":[{"count":0,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/2741\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media\/2743"}],"wp:attachment":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media?parent=2741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/categories?post=2741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/tags?post=2741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}