{"id":107986,"date":"2020-05-30T04:50:48","date_gmt":"2020-05-29T20:50:48","guid":{"rendered":"http:\/\/4563.org\/?p=107986"},"modified":"2020-05-30T04:50:48","modified_gmt":"2020-05-29T20:50:48","slug":"%e6%88%91%e4%b8%8d%e7%9f%a5%e9%81%93%e8%bf%99%e4%b8%aa-null-%e7%9a%84%e5%80%bc%e7%a9%b6%e7%ab%9f%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f-%e8%b0%a2%e8%b0%a2%e5%90%84%e4%bd%8d%e8%a7%a3%e7%ad%94","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=107986","title":{"rendered":"\u6211\u4e0d\u77e5\u9053\u8fd9\u4e2a null \u7684\u503c\u7a76\u7adf\u662f\u4ec0\u4e48\uff1f \u8c22\u8c22\u5404\u4f4d\u89e3\u7b54"},"content":{"rendered":"
\n
\n
\n

\u6211\u4e0d\u77e5\u9053\u8fd9\u4e2a null \u7684\u503c\u7a76\u7adf\u662f\u4ec0\u4e48\uff1f \u8c22\u8c22\u5404\u4f4d\u89e3\u7b54 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : xiaojiao <\/span> <\/i> 1<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\"\u6211\u4e0d\u77e5\u9053\u8fd9\u4e2a
\"\u6211\u4e0d\u77e5\u9053\u8fd9\u4e2a
\u600e\u4e48\u6211\u6ca1\u770b\u5230\u56fe\u7247 <\/div>\n
\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : xiaojiao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e3a\u4ec0\u4e48\u4e0d\u7528 equals \u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Hyseen <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u9760\uff0c\u5dee\u70b9\u88ab\u5ffd\u60a0\u4e86\uff0c\u7ec8\u4e8e\u53cd\u5e94\u8fc7\u6765\u3002
    \u4f60\u8fd9\u4e2a test \u662f\u5b57\u7b26\u4e32”null”\uff0c\u5e76\u4e14\u662f\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\uff0c\u6240\u4ee5\u6ca1\u8d70 if(test==”null”) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : luckyrayyy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53e6\u5916\u4f60\u8fd9\u56fe\u4e5f\u592a\u5927\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : luckyrayyy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @luckyrayyy #3 \u4ec0\u4e48\u610f\u601d\uff0c\u6211\u6ca1\u641e\u61c2\uff0c\u6211\u89c9\u5f97\u8fd9\u4e09\u4e2a\u4e2d\u5fc5\u6709\u4e00\u4e2a\u8981\u6267\u884c\u554a\uff0c\u4e0d\u4f1a\u8d70\u5230\u6700\u540e\u7684 else \u91cc\u9762\u53bb <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : xiaojiao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaojiao \u53bb\u5b66\u4e60\u4e0b\u7b49\u53f7\u548c equals \u7684\u533a\u522b <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : luckyrayyy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Java \u7684 String \u5224\u65ad\u503c\u5f97\u7528.equals()\u4e0d\u662f== <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Procumbens <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Procumbens #7 \u54e6\u54e6\u54e6 \u6211\u8bd5\u8bd5 \u6211\u6ca1\u600e\u4e48\u5199\u8fc7 java <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u6211\u4e0d\u77e5\u9053\u8fd9\u4e2a null \u7684\u503c\u7a76\u7adf\u662f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/107986"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=107986"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/107986\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=107986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=107986"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=107986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}