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[基础知识] JAVA基础知识指导:java读取utf8类型的文件

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发表于 2012-8-4 12:37:27 | 显示全部楼层 |阅读模式
源文件为utf-8格式,且里面包含中文,如:, l# ^1 V) O+ T; c( |
   
  _: W! F" U! \" h' t$ R    in ('133','153','180','189') then '电信'
0 E: Y, o- ?; o& t    * R2 _& ~: k: ^8 r& u1 f9 i
    in ('130','131','132','145','155','156','183','185','186') then '联通'
: t  j2 z0 E8 z, R+ z   
9 p. j* ^+ S2 f) P0 Y; i5 S9 w    1,不加转码的时候中文会乱码:& h7 d& V/ m# W( n5 s: d
   
! i3 }% l, N# a4 }    Java代码) n! p) \  U/ q9 z
   
- P# [) Q1 u6 w$ `$ L    1.public static void main(String[] args) throws Exception {
+ g: [7 S+ r5 \5 r! B  D" z  M) D) c   
) c% _" t& d! M0 ?2 `4 g    2.    File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");& \: u) Z7 G1 p
   
8 U( B, t! s# Y    3.    InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));5 \! A7 i+ i; o$ {
   
# b/ u5 [. @% \- _8 l    4.    BufferedReader bufReader = new BufferedReader(insReader);! S$ S& K* V( L& g# A5 `- u$ I
    7 C* G4 n4 V/ ^7 Q3 t! Y+ V7 b
    5.    String line = new String();2 ?$ P1 ~$ F  g7 S, w2 C# ~# x
    1 I; ?' e# q5 V% i
    6.    while ((line = bufReader.readLine()) != null) {
/ ~/ R$ d% F- C2 `2 q4 g/ b    % F$ |$ P( p6 x$ C$ g5 ^
    7.        System.out.println(line);6 G5 ~  u( e: ~4 I) g$ R1 v
   
$ n4 _" W* q3 y7 Y    8.    }4 i3 m- y* n) ?. l5 s9 }3 X( S8 |* w
    4 p, a5 y$ i6 ~# E1 W' j
    9.    bufReader.close();
- X, f0 x, h) a/ ~* i& @    - [- \& Y# v- {8 Z
    10.}$ \! ~$ O+ V2 k' o& V  }
   
! S2 {, v' Z% w2 D    public static void main(String[] args) throws Exception {
' A& `7 e- |; ?, y    3 `- d/ N7 _. ~& j
    File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");0 g; V/ H' A/ n- S! ^( s8 m
    3 U; }5 Z2 H& ^
    InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));
. P7 v3 b% a* ?4 p: T. r8 p8 Z    8 V/ S+ V. H7 W7 G; a1 I* \
    BufferedReader bufReader = new BufferedReader(insReader);
+ Z3 x; W7 L' k7 R9 z   
. u; Z/ s9 \3 D$ q/ \; N    String line = new String();# d- B! d  r& |% F: H4 D
    " m# u7 W( R# \! L2 |- }
    while ((line = bufReader.readLine()) != null) {) L: w5 W: S" s8 }0 A, y* A* c
   
) ~1 b- j. Y$ ]3 I/ b    System.out.println(line);
+ H+ I% a% [$ y) I& v   
( c. c9 \- F# ]5 y+ o    }
2 O) `; ?; [2 g+ X, K3 o( b    # V- F7 I1 J3 E* W
    bufReader.close();
% ]4 `  a# F, d% ?! t    1 s, I8 K5 q: [: U1 J& a  c- \, e
    }
# o' n! `& U7 d' J# Q. @+ g/ `- N8 ~    7 g! ]6 r- W. F  q. x9 B
    Java代码
, O+ }3 \* m* m; a0 y$ d* z5 o, {+ x    ) i. o% u, H" w. B2 I, d
    1.in ('133','153','180','189') then '鐢典俊'
4 ^0 E9 }+ F9 `1 u: g8 G    - d% g/ A9 i  ^" T6 z0 S9 g0 c. M
    2.in ('130','131','132','145','155','156','183','185','186') then '鑱旈?'
# \% d0 U5 h: v4 W3 Q   
* G, r: ~5 y5 }" Y" {+ q, J    in ('133','153','180','189') then '鐢典俊'$ X0 e. [* a# @8 G# g( ~6 y
    9 `4 {! G" G+ [% R  Y
    in ('130','131','132','145','155','156','183','185','186') then '鑱旈?'( r* y) I& S9 B0 C
    . p2 J  z2 |9 Y! P2 r: i3 b
    2,如果对string进行utf-8编码,某些中文加单引号会导致乱码:# |6 z9 a4 ^  ]' l& T
    4 V: a0 c& |; A) V" @- W
    Java代码
, c! j7 r% P6 S. ?7 x( v/ G! e1 r$ x0 i    4 O2 u, U2 T% [5 A/ o3 U3 V
    1.public static void main(String[] args) throws Exception {- M! {( ?) f2 Y5 V8 h( Z
    / ^5 x3 [4 R* w( n7 }; T
    2.        //String charsetName = "UTF-8";
1 [8 V+ k% e3 J3 q5 F$ H% M- F    . ?5 b1 H/ x/ J  F
    3.        File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");
& Z& e* U5 h- k$ [/ L; O1 Z* i/ l   
, A# i/ M* h2 L: `    4.        InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));
& u. F6 g; A, s. C/ G1 C    & S0 ^% z  j9 Q' t
    5.        BufferedReader bufReader = new BufferedReader(insReader);8 N: I6 S& u8 J  b
    + R- Y* U0 A8 [* e& a- P. O
    6.        String line = new String();2 A% @+ d; {* A( I
   
& i# y5 @4 U6 f: J+ R    7.        while ((line = bufReader.readLine()) != null) {
& `, Q& [& g! \5 U% V' F. Q   
- T2 E* _8 |) K' O: ]& t% P) t    8.            System.out.println(new String(line.getBytes(),"utf-8"));, Y6 ^4 K! @: B: h6 q2 ]4 L: Z( m7 a
    / q& u' a& C4 v, H7 ~; W; W
    9.        }% d0 g- ?9 O; C- x5 ]) f0 g+ j
   
( A) [0 d9 }1 F) \' `2 j    10.        bufReader.close();
6 p# A: ?( [0 k. l1 q; Z4 e) T1 M   
; K6 G8 E2 e* N    11.    }$ J- q# h- d, X# f
   
6 Y" K" [+ M% x9 H; C    public static void main(String[] args) throws Exception {) S3 S4 x& _0 m6 H0 }
    8 ?3 e( R+ s  K, r* Y: R6 u2 Q
    //String charsetName = "UTF-8";4 e# Y7 q  ?* b, v( |9 J0 Y
    ( l- N5 b/ q6 w* u* j) s# l6 D, |
    File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");
! I5 S% D' s' e5 @& J8 T      n3 J' L0 f# c: D9 |  m
    InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));! L* ]. i& n2 u, n* R
   
3 C9 o. h0 d3 Y+ m8 m    BufferedReader bufReader = new BufferedReader(insReader);
$ ^5 Z6 t6 P% @' e1 ?' W# A2 \   
" ]7 Y$ D4 q' R1 I    String line = new String();1 \" n! Y4 W& @" _
    . H( o" D' l2 a4 o
    while ((line = bufReader.readLine()) != null) {. p  a  `& r& O/ J5 z+ I4 i
   
5 w1 h' |  R. H7 b+ \    System.out.println(new String(line.getBytes(),"utf-8"));5 h) p2 @8 Y8 i; d; E2 ^/ k
    , K) M6 J4 k; D3 ~
    }
' _8 ]# I$ G6 `( f- b    % M/ q5 x% P3 ~
    bufReader.close();
7 J- X9 Y5 V& i4 _/ l1 ]  `" t    4 {* |( C: u4 Q+ \, F& [$ W8 `
    }
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 楼主| 发表于 2012-8-4 12:37:28 | 显示全部楼层

JAVA基础知识指导:java读取utf8类型的文件

Java代码5 m3 I$ z2 ]7 [8 r. D' g; t  g
    / }. ]  R* |* I: T3 I4 H4 f+ ]6 T
    1.in ('133','153','180','189') then '电信'
* m; D9 u3 D; g) E( @# h9 B   
1 U( S& D2 [1 c  y6 E5 F, J    2.in ('130','131','132','145','155','156','183','185','186') then '联??'0 e: ?: P/ x6 M8 p! q
   
: t' B! c- b3 {, s    in ('133','153','180','189') then '电信'( U5 H9 E  R/ q
      ?9 X1 r9 F0 v- ^0 Q4 r; k9 j
    in ('130','131','132','145','155','156','183','185','186') then '联??'% Y) ?6 T) q3 V( `. r: c# f2 N
    % i1 d: ^8 q% o! q0 ]# B! O5 d- `9 f
    3,读文件时候用utf8编码读,则不会有问题了:
! k! P+ q- F3 e   
# B* r! @4 @/ ~( u% J    Java代码
5 F; U% j, l* T    $ r+ M7 g+ s1 ^4 v$ Y4 F- G5 R
    1.public static void main(String[] args) throws Exception {
$ M  Q( o4 H/ {9 v# o, j' h   
  q% Q. K1 g, l) c7 X" d    2.        String charsetName = "UTF-8";4 ?9 j4 S1 V4 i8 u
   
( ^% j) ?& O- i9 d  l8 ~    3.        File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");: I' c  v6 }3 R8 b7 O  s: {) n% l
   
/ K. `7 ?! ]. f    4.        InputStreamReader insReader = new InputStreamReader(new FileInputStream(f), charsetName);
" y; s2 K, ]7 l   
; @# |3 b/ j4 W2 M) Y+ `( ]    5.        BufferedReader bufReader = new BufferedReader(insReader);% }4 P1 e- ^7 P$ ~! [# i
    1 W. k# O9 p+ l1 t( E2 w$ s  u% _: w
    6.        String line = new String();
' ~0 z: h" F& ^    , U3 F/ m. T3 L
    7.        while ((line = bufReader.readLine()) != null) {4 z: u& P+ e* t; j' H$ e. v. b8 v( c; I
    8 A$ }! w6 [+ g5 Z% t
    8.            System.out.println(line);$ t* I2 [1 [6 _, K3 ^5 L5 h" M, Y. w$ A
    8 V" q. _1 g! i5 Q( f
    9.        }# a* ~3 ^% z( Y" _4 h0 w! Q
   
8 \, w. E+ c1 F$ `    10.        bufReader.close();, Z$ T( u% \+ o0 v  M
   
$ N& J/ y. v. F: }9 r# J7 Q! |( S4 C    11.    }$ ^! _. F( _8 U, @# C, L
    ) ?/ ~; n8 s/ \! `! l
    public static void main(String[] args) throws Exception {3 x" l1 @* I- S7 d
    3 ^' N9 d" c6 n
    String charsetName = "UTF-8";
* b: ~% f! @+ D( [! I0 f    5 q! W3 {3 |: j- Z
    File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");
. ~# t8 B2 a$ H6 ?* |+ ]   
+ ?' P3 s6 }% L    InputStreamReader insReader = new InputStreamReader(new FileInputStream(f), charsetName);7 `1 f( l# S* Q: x8 Q9 Q1 X
   
$ @9 {+ f) L$ @  R    BufferedReader bufReader = new BufferedReader(insReader);
0 B  }6 C% d+ s1 v5 s* ~3 ?8 F$ p   
$ \* B1 G; ?. X0 g! ?    String line = new String();
% x( ~, W  H/ @) c  B+ C& X    3 @0 c8 {+ P( C' [/ j' ~# i
    while ((line = bufReader.readLine()) != null) {8 [9 U3 s/ g' w
   
5 L  \1 g3 X6 Y, k  z    System.out.println(line);; ^3 k" n1 U: E6 m+ I; Q" W
    ) e) {9 q6 s; _6 J& F  g
    }
3 a7 j+ M0 X; n* ?5 E, T, z   
' \* N1 S7 T. v    bufReader.close();
/ T/ x& _9 _' O( ]3 q   
" K$ b( U% c6 i3 V9 N) p- G# h/ Z! A    }9 ^8 H0 h% @: |. U5 H$ L
   
. J8 |0 Q" O  ?    Java代码3 E7 {2 X/ w; e
    & |& E2 P$ Q- i  r0 t
    1.in ('133','153','180','189') then '电信'
) V: h6 y6 L& \+ v# ?# c   
- ~9 v2 n( \+ `/ |& B6 U    2.in ('130','131','132','145','155','156','183','185','186') then '联通'
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