{"id":606,"date":"2021-02-06T14:27:57","date_gmt":"2021-02-06T06:27:57","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=606"},"modified":"2021-02-08T16:16:59","modified_gmt":"2021-02-08T08:16:59","slug":"properties-%e6%96%87%e4%bb%b6%e6%b5%81%e9%9b%86%e5%90%88","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-606.html","title":{"rendered":"Properties \u6587\u4ef6\u6d41\u96c6\u5408"},"content":{"rendered":"\n<p>Properties \u96c6\u5408\uff0c\u662f Hashtable \u7684\u5b50\u7c7b<\/p>\n\n\n\n<p>Properties \u96c6\u5408\u7684 key \u548c value \u90fd\u662f\u5b57\u7b26\u4e32<\/p>\n\n\n\n<p>Properties \u96c6\u5408\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5173\u4e8e I\/O \u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8bfb\u53d6,\u5199\u5165\u6587\u4ef6<\/p>\n\n\n\n<p>Properties \u4e3b\u8981\u7528\u4e8e\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\uff0c\u800c\u4e0d\u662f\u7528\u4f5c\u666e\u901a\u7684\u96c6\u5408\u4f7f\u7528<\/p>\n\n\n\n<h5>1.\u5bfc\u5305<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Properties;<\/code><\/pre>\n\n\n\n<h5>2.\u6784\u9020\u65b9\u6cd5<\/h5>\n\n\n\n<p>\u9ed8\u8ba4\u5c31\u662f\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u6cdb\u578b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Properties p = new Properties();<\/code><\/pre>\n\n\n\n<h5>3.\u65b9\u6cd5<\/h5>\n\n\n\n<p>1.\u6dfb\u52a0\u6570\u636e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p.setProperty(\"\u5f20\u4e09\",\"168\");\np.setProperty(\"\u674e\u56db\",\"175\");\np.setProperty(\"\u738b\u4e94\",\"188\");<\/code><\/pre>\n\n\n\n<p>2.\u83b7\u53d6 value<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>String v = p.getProperty(\"\u5f20\u4e09\");\nSystem.out.println(v);<\/code><\/pre>\n\n\n\n<p>3.\u904d\u5386<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Set&lt;String&gt; set = p.stringPropertyNames();\nfor(String key : set){\n  String value = p.getProperty(key);\n  System.out.println(key+\"=\"+value);\n}<\/code><\/pre>\n\n\n\n<p>4.\u5199\u5165\u5230\u6587\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ p.store(\u6d41,\u6ce8\u91ca)\uff0c\n\/\/ \u5bf9\u4e8e2\u79cd\u6d41\uff0cOutputStream\u4e0d\u80fd\u5199\u4e2d\u6587\uff0cWriter\u53ef\u4ee5\u4e2d\u6587\uff0c\n\/\/ \u5bf9\u4e8e\u6ce8\u91ca,\u9ed8\u8ba4Unicode\u7f16\u7801\uff0c\u7cfb\u7edf\u9ed8\u8ba4gbk\uff0c\u5199\u4e2d\u6587\u4f1a\u4e71\u7801\uff0c\u4e00\u822c\u5199\u82f1\u6587\u6216\u7a7a\u5b57\u7b26\u4e32\n\/\/ new FileWriter \u4f1a\u6709\u5f02\u5e38\uff0c\u9700\u8981\u6355\u83b7\u6216\u629b\u51fa\ntry {\n\tp.store(new FileWriter(\"D:\\\\a.txt\"),\"\");\n \/\/\u5199\u5230D\u76d8a.txt\uff0c\u6ce8\u91ca\u4e3a\u7a7a\u4e32\n} catch (IOException e) {\n\te.printStackTrace();\n \/\/\u5982\u679c\u6709\u5f02\u5e38\uff0c\u6253\u5370\u5f02\u5e38\u4fe1\u606f\n}<\/code><\/pre>\n\n\n\n<p>5.\u8bfb\u53d6\u6587\u4ef6\u4e2d\u7684 Properties \u4fe1\u606f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ p.load(\u6d41)\uff0c\u5bf9\u4e8e\u6d41\uff0c InputStream \u4e0d\u80fd\u8bfb\u53d6\u4e2d\u6587\uff0cReader\u53ef\u4ee5\u4e2d\u6587\nProperties p = new Properties();\ntry {\n\tp.load(new FileReader(\"D:\\\\a.txt\"));\n  \/\/\u4eceD\u76d8a.txt\u8bfb\u53d6\n}catch(IOException e) {\n\te.printStackTrace();\n}\nSet&lt;String> set = p.stringPropertyNames();\n  \/\/\u904d\u5386\u8f93\u51faProperties\u96c6\u5408\nfor(String key : set){\n  String value = p.getProperty(key);\n  System.out.println(key+\"=\"+value);\n}<\/code><\/pre>\n\n\n\n<h5>4.\u6ce8\u610f\u4e8b\u9879<\/h5>\n\n\n\n<p>Properties \u7528\u4f5c\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u65f6\uff0c\u901a\u5e38\u662f .properties \u540e\u7f00<\/p>\n\n\n\n<p>Properties \u914d\u7f6e\u6587\u4ef6\u7684\u6ce8\u91ca\uff0c\u662f #<\/p>\n\n\n\n<p>Properties \u914d\u7f6e\u6587\u4ef6\uff0c\u6bcf\u4e00\u884c\u4ec5\u5199\u4e00\u6761\u6570\u636e<\/p>\n\n\n\n<p>Properties \u914d\u7f6e\u6587\u4ef6\uff0c\u6bcf\u884c\u4e2d\u7684 key, value \u53ef\u4ee5\u7528 = , \u7a7a\u683c\u7b49\u9694\u5f00<\/p>\n\n\n\n<p>Properties \u914d\u7f6e\u6587\u4ef6\uff0c\u6bcf\u884c\u4e2d\u7684\u6570\u636e\uff0c\u9ed8\u8ba4\u662f\u5b57\u7b26\u4e32\uff0c\u65e0\u9700\u52a0 &#8220;&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Properties \u96c6\u5408\uff0c\u662f Hashtable \u7684\u5b50\u7c7b Properties \u96c6\u5408\u7684 key \u548c valu&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-606.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">Properties \u6587\u4ef6\u6d41\u96c6\u5408<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/606"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=606"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/606\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}