{"id":775,"date":"2021-06-09T14:39:02","date_gmt":"2021-06-09T06:39:02","guid":{"rendered":"https:\/\/www.dd-home.top\/?p=775"},"modified":"2021-07-18T23:43:52","modified_gmt":"2021-07-18T15:43:52","slug":"lombok-%e5%b8%b8%e7%94%a8%e7%9a%84%e6%b3%a8%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.dd-home.top\/?p=775","title":{"rendered":"Lombok \u5e38\u7528\u7684\u6ce8\u89e3"},"content":{"rendered":"

\u6b64\u6587\u7528\u4e8e\u4ecb\u7ecdlombok\u7684\u5e38\u7528\u7528\u6cd5\uff0c\u4f8b\u5982@NonNull,@Cleanup\u7b49\u7b49\u3002<\/p>\n

<\/p>\n

@NonNull<\/code><\/a><\/h4>\n

\u914d\u7f6e\u4fe1\u606f<\/p>\n

lombok.nonNull.exceptionType<\/code>\u00a0= [NullPointerException<\/code>\u00a0|\u00a0IllegalArgumentException<\/code>\u00a0|\u00a0JDK<\/code>\u00a0|\u00a0Guava<\/code>\u00a0|\u00a0Assertion<\/code>] (default:\u00a0NullPointerException<\/code>).<\/p>\n\n\n\n
import\u00a0<\/b><\/span>lombok.NonNull;<\/span><\/code><\/p>\n

public\u00a0class\u00a0<\/b><\/span>NonNullExample\u00a0<\/span>extends\u00a0<\/b><\/span>Something\u00a0<\/span>{<\/span>
\n\u00a0\u00a0<\/span>private\u00a0<\/b><\/span>String\u00a0name;<\/span>
\n\u00a0\u00a0<\/span>
\n\u00a0\u00a0<\/span>public\u00a0<\/b><\/span>NonNullExample<\/span>(<\/span>@NonNull\u00a0<\/span>Person\u00a0person<\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>super<\/b><\/span>(<\/span>“Hello”<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>this<\/b><\/span>.name\u00a0=\u00a0person.getName<\/span>()<\/span>;<\/span>
\n\u00a0\u00a0<\/span>}<\/span>
\n}<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
import\u00a0<\/b><\/span>lombok.NonNull;<\/span><\/code><\/p>\n

public\u00a0class\u00a0<\/b><\/span>NonNullExample\u00a0<\/span>extends\u00a0<\/b><\/span>Something\u00a0<\/span>{<\/span>
\n\u00a0\u00a0<\/span>private\u00a0<\/b><\/span>String\u00a0name;<\/span>
\n\u00a0\u00a0<\/span>
\n\u00a0\u00a0<\/span>public\u00a0<\/b><\/span>NonNullExample<\/span>(<\/span>@NonNull\u00a0<\/span>Person\u00a0person<\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>super<\/b><\/span>(<\/span>“Hello”<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>if\u00a0<\/b><\/span>(<\/span>person\u00a0==\u00a0<\/span>null<\/b><\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>throw\u00a0new\u00a0<\/b><\/span>NullPointerException<\/span>(<\/span>“person\u00a0is\u00a0marked\u00a0@NonNull\u00a0but\u00a0is\u00a0null”<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>this<\/b><\/span>.name\u00a0=\u00a0person.getName<\/span>()<\/span>;<\/span>
\n\u00a0\u00a0<\/span>}<\/span>
\n}<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/h4>\n

@Cleanup<\/code><\/a><\/h4>\n\n\n\n
import\u00a0<\/b><\/span>lombok.Cleanup;<\/span>
\nimport\u00a0<\/b><\/span>java.io.*;<\/span><\/code><\/code>public\u00a0class\u00a0<\/b><\/span>CleanupExample\u00a0<\/span>{<\/span>
\n\u00a0\u00a0<\/span>public\u00a0static\u00a0<\/b><\/span>void\u00a0<\/b><\/span>main<\/span>(<\/span>String<\/span>[]\u00a0<\/span>args<\/span>)\u00a0<\/span>throws\u00a0<\/b><\/span>IOException\u00a0<\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>@Cleanup\u00a0<\/span>InputStream\u00a0in\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>FileInputStream<\/span>(<\/span>args<\/span>[<\/span>0<\/span>])<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>@Cleanup\u00a0<\/span>OutputStream\u00a0out\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>FileOutputStream<\/span>(<\/span>args<\/span>[<\/span>1<\/span>])<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>byte<\/b><\/span>[]\u00a0<\/span>b\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>byte<\/b><\/span>[<\/span>10000<\/span>]<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>while\u00a0<\/b><\/span>(<\/span>true<\/b><\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>int\u00a0<\/b><\/span>r\u00a0=\u00a0in.read<\/span>(<\/span>b<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if\u00a0<\/b><\/span>(<\/span>r\u00a0==\u00a0–<\/span>1<\/span>)\u00a0<\/span>break<\/b><\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>out.write<\/span>(<\/span>b,\u00a0<\/span>0<\/span>,\u00a0r<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0<\/span>}<\/span>
\n}<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
import\u00a0<\/b><\/span>java.io.*;<\/span><\/code><\/p>\n

public\u00a0class\u00a0<\/b><\/span>CleanupExample\u00a0<\/span>{<\/span>
\n\u00a0\u00a0<\/span>public\u00a0static\u00a0<\/b><\/span>void\u00a0<\/b><\/span>main<\/span>(<\/span>String<\/span>[]\u00a0<\/span>args<\/span>)\u00a0<\/span>throws\u00a0<\/b><\/span>IOException\u00a0<\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>InputStream\u00a0in\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>FileInputStream<\/span>(<\/span>args<\/span>[<\/span>0<\/span>])<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>try\u00a0<\/b><\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>OutputStream\u00a0out\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>FileOutputStream<\/span>(<\/span>args<\/span>[<\/span>1<\/span>])<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try\u00a0<\/b><\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>byte<\/b><\/span>[]\u00a0<\/span>b\u00a0=\u00a0<\/span>new\u00a0<\/b><\/span>byte<\/b><\/span>[<\/span>10000<\/span>]<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>while\u00a0<\/b><\/span>(<\/span>true<\/b><\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>int\u00a0<\/b><\/span>r\u00a0=\u00a0in.read<\/span>(<\/span>b<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if\u00a0<\/b><\/span>(<\/span>r\u00a0==\u00a0–<\/span>1<\/span>)\u00a0<\/span>break<\/b><\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>out.write<\/span>(<\/span>b,\u00a0<\/span>0<\/span>,\u00a0r<\/span>)<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}\u00a0<\/span>finally\u00a0<\/b><\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if\u00a0<\/b><\/span>(<\/span>out\u00a0!=\u00a0<\/span>null<\/b><\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>out.close<\/span>()<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>}\u00a0<\/span>finally\u00a0<\/b><\/span>{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if\u00a0<\/b><\/span>(<\/span>in\u00a0!=\u00a0<\/span>null<\/b><\/span>)\u00a0{<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>in.close<\/span>()<\/span>;<\/span>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span>
\n\u00a0\u00a0<\/span>}<\/span>
\n}<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

@Getter\/@Setter<\/code><\/a><\/h4>\n

\u914d\u7f6eBoolean\u7c7b\u578b\u7684getter\u65b9\u6cd5<\/p>\n

lombok.getter.noIsPrefix<\/code>\u00a0= [true<\/code>\u00a0|\u00a0false<\/code>] (default: false)<\/p>\n

@Data<\/code><\/a><\/h4>\n

@Value<\/code><\/a><\/h4>\n

@Builder<\/code><\/a><\/h4>\n

@SneakyThrows<\/code><\/a><\/h4>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

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