{"id":64634,"date":"2025-05-03T12:16:57","date_gmt":"2025-05-03T04:16:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64634\/"},"modified":"2025-05-03T12:16:57","modified_gmt":"2025-05-03T04:16:57","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84%e9%87%8c%e7%9a%84%e7%a9%ba%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64634\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u8fc7\u6ee4\u6570\u7ec4\u91cc\u7684\u7a7a\u503c"},"content":{"rendered":"<blockquote><p>\n  \u5bf9\u4e8e\u5982\u4f55\u5728 java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u7a7a\u503c\uff0c\u672c\u6587\u63d0\u4f9b\u4e86\u4e24\u79cd\u5e38\u7528\u65b9\u6cd5\uff1a\u4f7f\u7528 guava \u5e93\uff1a\u9700\u8981\u4f9d\u8d56 guava\uff0c\u4f46\u66f4\u7b80\u5355\u3001\u9ad8\u6548\u3002\u4f7f\u7528 java 8 \u6d41\uff1a\u4e0d\u9700\u8981\u5916\u90e8\u4f9d\u8d56\u9879\uff0c\u4f46\u7565\u6162\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110404331570518.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u600e\u4e48\u8fc7\u6ee4\u6570\u7ec4\u91cc\u7684\u7a7a\u503c\u63d2\u56fe\" alt=\"java\u4e2d\u600e\u4e48\u8fc7\u6ee4\u6570\u7ec4\u91cc\u7684\u7a7a\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u7a7a\u503c<\/strong><\/p>\n<p>Java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7a7a\u503c\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u672c\u6587\u5c06\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Guava \u5e93<\/strong><\/p>\n<ul>\n<li> <strong>\u4f18\u70b9\uff1a<\/strong>\u7b80\u5355\u3001\u9ad8\u6548\u3002<\/li>\n<li> <strong>\u7f3a\u70b9\uff1a<\/strong>\u9700\u8981\u5f15\u5165 Guava \u4f9d\u8d56\u9879\u3002<\/li>\n<\/ul>\n<p><strong>\u6b65\u9aa4\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ol>\n<li>\u5bfc\u5165 Guava \u5e93\uff1aimport com.google.common.base.Predicates;<\/li>\n<li>\u4f7f\u7528 filter() \u65b9\u6cd5\u8fc7\u6ee4\u7a7a\u503c\uff1a<\/li>\n<\/ol>\n<pre>List&lt;String&gt; listWithEmptyValues = Arrays.asList(\"foo\", null, \"bar\", null, \"baz\");\nList&lt;String&gt; listWithoutEmptyValues = Lists.newArrayList(Iterables.filter(listWithEmptyValues, Predicates.notNull()));<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 Java 8 \u6d41<\/strong><\/p>\n<ul>\n<li> <strong>\u4f18\u70b9\uff1a<\/strong>\u9002\u7528\u4e8e Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\uff0c\u65e0\u9700\u5f15\u5165\u5916\u90e8\u4f9d\u8d56\u9879\u3002<\/li>\n<li> <strong>\u7f3a\u70b9\uff1a<\/strong>\u6bd4 Guava \u5e93\u65b9\u6cd5\u7a0d\u6162\u3002<\/li>\n<\/ul>\n<p><strong>\u6b65\u9aa4\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ol>\n<li>\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u6d41\uff1aStream stream = Arrays.stream(array); <\/li>\n<li>\u4f7f\u7528 filter() \u65b9\u6cd5\u8fc7\u6ee4\u7a7a\u503c\uff1astream = stream.filter(Objects::nonNull);<\/li>\n<li>\u5c06\u6d41\u8f6c\u6362\u4e3a\u65b0\u6570\u7ec4\uff1a<\/li>\n<\/ol>\n<pre>String[] arrayWithoutEmptyValues = stream.toArray(String[]::new);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6548\u7387\u6bd4\u8f83<\/strong><\/p>\n<p>\u4e00\u822c\u6765\u8bf4\uff0cGuava \u5e93\u7684\u65b9\u6cd5\u6bd4 Java 8 \u6d41\u65b9\u6cd5\u66f4\u6709\u6548\u7387\u3002\u4f46\u662f\uff0c\u5982\u679c\u6570\u7ec4\u975e\u5e38\u5927\u6216\u8fc7\u6ee4\u64cd\u4f5c\u975e\u5e38\u9891\u7e41\uff0c\u90a3\u4e48 Java 8 \u6d41\u65b9\u6cd5\u53ef\u80fd\u66f4\u9002\u5408\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u8fc7\u6ee4\u6570\u7ec4\u91cc\u7684\u7a7a\u503c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5bf9\u4e8e\u5982\u4f55\u5728 java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u7a7a\u503c\uff0c\u672c\u6587\u63d0\u4f9b\u4e86\u4e24\u79cd\u5e38\u7528\u65b9\u6cd5\uff1a\u4f7f\u7528 guava \u5e93\uff1a\u9700\u8981\u4f9d\u8d56 guava\uff0c\u4f46\u66f4\u7b80\u5355\u3001\u9ad8\u6548\u3002\u4f7f\u7528 java 8 \u6d41\uff1a\u4e0d\u9700\u8981\u5916\u90e8\u4f9d\u8d56\u9879\uff0c\u4f46\u7565\u6162\u3002 \u5982\u4f55\u5728 Java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u7a7a\u503c Java \u4e2d\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7a7a\u503c\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u672c\u6587\u5c06\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Guava \u5e93 \u4f18\u70b9\uff1a\u7b80\u5355\u3001\u9ad8\u6548\u3002 \u7f3a\u70b9\uff1a\u9700\u8981\u5f15\u5165 Guava \u4f9d\u8d56\u9879\u3002 \u6b65\u9aa4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5bfc\u5165 Guava \u5e93\uff1aimport com.google.common.base.Predicates; \u4f7f\u7528 filter() \u65b9\u6cd5\u8fc7\u6ee4\u7a7a\u503c\uff1a List&lt;String&gt; listWithEmptyValues = Arrays.asList(&#8220;foo&#8221;, null, &#8220;bar&#8221;, null, &#8220;baz&#8221;); List&lt;String&gt; listWithoutEmptyValues = Lists.newArrayList(Iterables.filter(listWithEmptyValues, Predicates.notNull())); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Java 8 \u6d41 \u4f18\u70b9\uff1a\u9002\u7528\u4e8e Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\uff0c\u65e0\u9700\u5f15\u5165\u5916\u90e8\u4f9d\u8d56\u9879\u3002 \u7f3a\u70b9\uff1a\u6bd4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-64634","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64634","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=64634"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64634\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}